TikTok & Instagram Trends for September 2026 (and How Brands Can Actually Use Them)

Pumpkin spice and knitwear season is officially here, and social is feeling the aesthetic.

September always brings a noticeable shift online. Summer content starts to disappear, darker colour palettes creep back in, routines return and the first signs of spooky season start appearing suspiciously early. This year, that seasonal change is happening alongside a wider shift in how people are creating and consuming content.

Across TikTok and Instagram, ordinary life is becoming interesting again. Creators are romanticising mundane habits, celebrating small wins and turning increasingly specific observations into humour. At the same time, Fashion Month, major film releases, 90s and 00s nostalgia and the beginnings of Christmas shopping are giving brands plenty of wider cultural moments to work with.

As always, the opportunity isn't to jump on everything. It's understanding what's shaping social, why audiences are responding to it and where your brand has a natural reason to join in.

Christmas content needs to start now

Before we get into what's trending, there's one important commercial shift brands need to have on their radar: Christmas shopping and list-making are well and truly underway.

September might feel early, but people don't wait until December to start deciding what they want. Wish lists are being built, gift ideas are being saved and products are already being shared between friends and family. That means brands hoping to make it onto those lists need to start creating gift inspiration now if they haven't already.

At this stage, the opportunity is less about covering your feed in tinsel and more about discovery. Early gift guides, creator recommendations, wish-list content, “gifts for the person who…” formats, stocking-filler inspiration and saveable product collections can all start planting the seed without making your September feed feel like Christmas Day.

By the time someone actively starts searching for Christmas gifts later in the year, they'll already have been exposed to hundreds of ideas. Starting early gives brands a better chance of being one of the products they actually remember.

If your festive planning isn't quite there yet, we've done some of the work for you. If you haven't already downloaded our free Christmas Playbook, you can find it here.

What's actually driving TikTok and Instagram right now

Ordinary life is becoming aspirational

One of the clearest themes running through September's trends is a rejection of the idea that everything online needs to be impressive.

The “Kinda Chic” trend is a perfect example. Creators are using the phrase to romanticise behaviours that wouldn't traditionally be considered particularly glamorous, whether that's staying home on a Saturday, repeating an outfit or generally choosing the less exciting option.

The “Someone Has to Hold It Down” format taps into something similar, with creators championing the underrated choice instead of whatever social has collectively decided is the aspirational one.

For brands, the interesting part isn't necessarily recreating either format. It's what they tell us about audiences. After years of hyper-curated routines, viral products and aspirational lifestyles, there's something refreshing about openly choosing the ordinary option.

Fashion brands could celebrate outfit repeating rather than constantly pushing what's new. Food brands could lean into the comfort meal people genuinely eat three nights in a row. Travel brands could champion the overlooked destination rather than another perfectly curated hotspot.

Relatability doesn't mean making deliberately boring content. It means understanding that sometimes the less polished choice is the more culturally relevant one.

Small wins are replacing huge transformations

The Gold Star Behaviour trend takes that shift one step further, with creators celebrating small habits and decisions they think deserve recognition.

Instead of huge achievements or dramatic transformations, people are giving themselves gold stars for things like outfit repeating, admitting when they're wrong or making more considered choices. A lot of the examples also revolve around buying less rather than more, which feels noticeably different from the haul culture that dominated social throughout the 2010s and early 2020s.

For brands, this is an opportunity to think beyond positioning the product as the achievement. What behaviour does your audience already feel good about?

A supermarket could celebrate remembering to check what's in the fridge before shopping. A beauty brand could champion finally finishing a product before opening another. A fitness brand could recognise the 20-minute walk on a day when a full workout wasn't happening.

The brand doesn't always need to be the hero of the story. Showing that you understand the small realities of your audience's life can often create a stronger connection.

The more specific the joke, the better

Humour on TikTok is becoming increasingly niche, and the “I Try to Act Normal” trend is a good example of how far specificity can take a very simple format.

Creators use the audio to describe situations where they're outwardly keeping it together while internally losing their mind. The format itself is straightforward, which means the caption is where the joke actually happens.

For brands, the lesson is to stop trying to make every observation universally relatable. “When it's Monday again” technically applies to millions of people, but it doesn't tell us anything particularly interesting.

“When you've already taken your shoes off and someone suggests going to another pub” is much more specific, and therefore much more recognisable to the people who've experienced it.

The same principle applies to brand content. A social agency joking about someone asking to “make the logo bigger” will mean nothing to a lot of people, but to the right audience it immediately feels like an inside joke.

You don't always need everyone to get it. Sometimes the strongest content is made specifically for the people you want to reach.

Products are becoming characters

September also has some slightly sillier formats coming through, including “It Was a Bad Dream”, where creators give everyday objects their own fears.

A product is shown approaching its worst possible fate before the video cuts to it waking up in bed, relieved that the whole thing was a nightmare. A phone might nearly fall into water, for example, before waking safely under the covers.

It's a simple format, but there's a useful creative lesson for product brands underneath it. Social allows products to have personalities in a way traditional product marketing often doesn't.

Instead of explaining another feature, think about what your product would love, hate or be terrified of. A pair of white trainers might have nightmares about a muddy festival. A packet of biscuits might fear hearing “shall we share?”. A suitcase might see someone approaching with an oversized luggage sticker and panic.

Giving products human characteristics opens up much more entertaining creative territory than simply putting them in front of a camera and listing their benefits.

The hook is becoming the trend

Not every social trend now relies on a particular sound, dance or edit. Increasingly, the format itself is the hook.

We're seeing variations of “Things I've done that would send a [specific person] into a coma”, “Everyone told me to X, I did Y instead”, “I'll never do X as a [profession]” and “I've changed my mind about X, here's why” appearing across educational and opinion-led content.

These formats are particularly useful for brands with expertise because they create an immediate reason to keep watching. “Five ways to improve your paid social performance” might contain brilliant advice, but it's fighting against thousands of almost identical introductions.

“Everyone told us to put more budget behind the winning ad. We did this instead” creates a gap between what the viewer expects and what they're about to learn.

The important bit is having something worthwhile on the other side of the hook. “The death of influencer marketing” followed by an explanation of why influencer marketing is actually doing quite well isn't a hot take. It's clickbait.

The hook earns the attention. Your expertise needs to justify it.

Educational content is getting better packaging

That same shift is helping educational content become more social-first.

Formats like “If you're spending hours doing X, try this instead”, “Advice I'd give every new X”, “Small habits that make a massive difference to X” and “10/10 habits for X” make the value of the content clear immediately.

The 10/10 Habits trend fits particularly well with September's wider “lock in” mentality, with creators sharing routines around discipline, productivity and self-improvement as people settle back into post-summer routines.

For brands, the opportunity isn't to copy these hooks word-for-word. It's to get much clearer about the problem the content is solving.

If you know your audience struggles with something, start there. Useful information performs much better when people immediately understand why it's useful to them.

September is January 2.0

September has always had a bit of January energy. Summer ends, routines return and suddenly everyone owns a new notebook and has decided they're going to completely reorganise their life.

This year, “lock in” culture is giving that seasonal behaviour a particularly social feel. People are sharing the habits they're picking back up, what they're leaving behind after summer and what they want to achieve before the end of the year.

That gives brands a much bigger opportunity than traditional back-to-school content. Fitness can focus on rebuilding routines, food brands have weekday meals and meal prep, finance has the post-summer spending reset, while fashion and beauty naturally move into the seasonal switch.

For B2B brands, September is also a natural time for Q4 predictions. What are you seeing change in your industry? What do you think brands should stop doing? What are you betting on heading into 2027?

The strongest version of this content isn't another generic trends prediction. It's a clear point of view based on what you're actually seeing.

What's shaping culture in September 2026

Social trends don't begin and end on social. Film, fashion, music and entertainment shape the references, aesthetics and behaviours that eventually appear on TikTok and Instagram.

September has a particularly strong cultural calendar, and brands should be watching what happens around these moments rather than simply waiting for a sound to start trending.

Fashion Month will shape more than fashion

September means Fashion Month, with New York, London, Milan and Paris bringing runway shows, street style, celebrity front rows, GRWMs and endless trend commentary back onto feeds.

What happens on the runway rarely stays there. Colours, silhouettes, styling details and beauty looks are picked up by creators quickly, while street style often becomes just as influential as the collections themselves.

The continued influence of the 90s and early 2000s isn't disappearing either, with archive references, layering, statement outerwear and richer autumn shades likely to feed into the wider seasonal aesthetic.

Non-fashion brands don't need to suddenly start reviewing collections. Instead, look at the content behaviours Fashion Month creates. Could your product get its own runway? Could your team rank looks from within your category? Could you borrow street-style photography conventions for something completely unexpected?

Borrow the behaviour, not somebody else's brand identity.

Spider-Man shows the power of fandom's long tail

Spider-Man remains firmly in the cultural conversation following Spider-Man: Brand New Day, with fan edits, theories, memes, fashion, merchandise and wider Marvel content extending the life of the release well beyond opening weekend.

That's the more interesting lesson for brands. Entertainment moments no longer exist around one release date.

Before a major film there's casting, speculation, trailers and first looks. During release there are reactions and memes. Afterwards come theories, edits, costumes, merchandise and rediscovery of everything that came before.

Spider-Man is particularly powerful because different generations have their own relationship with the character and franchise.

Brands don't necessarily need to make Spider-Man content. They need to understand how fandom behaves. If a cultural moment genuinely overlaps with your audience, the opportunity to participate can be much longer than you think.

Practical Magic is setting the autumn mood

Practical Magic 2 feels almost perfectly designed for the internet's autumn aesthetic.

Sandra Bullock and Nicole Kidman returning to the world of the Owens sisters brings together 90s nostalgia, witchcraft, cosy interiors, autumn fashion and sisterhood at exactly the point feeds are starting to shift towards spooky season.

For beauty, fashion, interiors, food and lifestyle brands, there's plenty of surrounding territory to explore. Expect darker beauty looks, witchy references, candles, cosy recipes, autumn styling and late-90s aesthetics to become increasingly visible.

That doesn't mean every brand needs to create “our products as Practical Magic characters”.

The smarter opportunity is usually to reference the mood rather than the IP itself. Cultural releases often create much bigger aesthetic movements around them, and that's where more brands can participate naturally.

Spooky season starts before October

Practical Magic isn't the only release pushing feeds towards spooky season. September's film calendar also includes horror releases such as Resident Evil, while audiences naturally begin revisiting horror franchises and Halloween content as autumn arrives.

Horror is particularly useful creatively because its visual language is so recognisable. Dramatic zooms, ominous audio, POVs, jump scares and “whatever you do, don't…” setups can all be adapted without needing a huge production budget.

The best brand versions will once again be specific. For travel, the horror might be discovering your passport has expired the night before your flight. For beauty, dropping the last of an expensive product down the sink. For food, someone saying they don't want anything before immediately eating yours.

Use the conventions of the genre rather than forcing your brand into a film conversation it doesn't belong in.

90s and 00s nostalgia still has plenty of life

Fashion isn't the only place where the past is shaping current culture.

Practical Magic is bringing a late-90s world back to screens, Spider-Man spans multiple generations of fandom, and Britpop and Oasis nostalgia remain firmly embedded in UK culture. Older music also continues to find completely new audiences through TikTok, edits and creator content.

For established brands, this should be a reminder to look at what you already own before manufacturing a new nostalgia campaign.

Old adverts, packaging, stores, campaign photography, uniforms, discontinued products and forgotten collaborations can all become social content. For younger audiences, something sitting in your archive for 20 years may genuinely feel new.

Sometimes the cultural reference you're looking for is already sitting on an old hard drive.

September moments brands should have on their radar

Beyond the bigger shifts, September's calendar gives brands plenty of smaller moments to build around.

Fashion Month will dominate fashion, beauty and lifestyle conversation throughout September, but its influence will spread much further through aesthetics, photography and creator formats.

Back-to-school and back-to-routine season creates opportunities across food, fitness, finance, retail, productivity and travel, particularly when brands broaden the idea beyond parents and students.

Spooky season starts warming up throughout September, making this a good time to begin introducing autumn and Halloween creative rather than waiting until the final week of October.

And, of course, Christmas discovery is already happening. If gifting is commercially important to your brand, September should be part of your Christmas social strategy rather than the month before it begins.

How brands should approach September

September is a good example of why social strategy needs to look beyond whatever audio happens to be trending that morning.

There are individual formats worth using, but the bigger shifts are more valuable. Audiences are responding to specificity over mass relatability, ordinary experiences over constant aspiration and useful content that's packaged in a way that actually earns attention.

At the same time, culture is handing brands plenty to work with. Fashion Month will shape aesthetics, film releases will influence moods and fandoms, nostalgia will keep bringing old references back into the present and Christmas consideration is already beginning.

You don't need to participate in all of it.

Choose the moments that genuinely overlap with your audience, understand why they're resonating and build something that feels like your brand belongs there.

That's much more valuable than jumping on a trend simply because everyone else has.

FAQs: TikTok & Instagram Trends September 2026

What are the biggest social media trends for September 2026?

September is seeing a move towards hyper-specific humour, ordinary and anti-aspirational content, small-win formats such as Gold Star Behaviour, “lock in” and reset content, and stronger opinion or problem-led hooks for educational posts.

What is trending on TikTok in September 2026?

Formats including Kinda Chic, Gold Star Behaviour, I Try to Act Normal, Someone Has to Hold It Down, It Was a Bad Dream and 10/10 Habits are among the formats brands can experiment with this month.

What cultural trends should brands watch in September?

Fashion Month, Practical Magic 2, Spider-Man and Marvel fandom, the start of spooky season, 90s and 00s nostalgia and early Christmas shopping are all likely to influence social content and audience behaviour.

Should brands start Christmas content in September?

Yes. Christmas wish lists, product discovery and gift inspiration begin well before peak buying season. Brands should use September to start building consideration through creator recommendations, gift inspiration and saveable content rather than waiting until November to begin talking about gifting.

How should brands use TikTok and Instagram trends?

Don't start with the question “how can we put our product into this?”. Start by understanding why people are responding to the trend and whether your brand has something relevant to add. The strongest trend-led content feels native to both the platform and the brand.

Want to know what's coming next?

Social moves quickly, but your strategy shouldn't depend on spotting trends three weeks after everyone else.

At Pepper, we help brands understand the communities, conversations and cultural shifts shaping social - and turn them into organic, paid and creator content that actually belongs on the platform.

If you want to build a social strategy around how people actually use social, get in touch with Pepper.

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