Hold Up, the Noughties Are Calling—5 Y2K Denim Trends That Are Officially Making a Comeback in 2025

When my mum would always say "I used to wear that trend" growing up, I could never quite imagine myself saying the same thing. But now in my 30s, it's true, trends come back round, and round again. Just take disk belts, for example, 12-year-old me would be chuffed to see them make a comeback last year—me now, not so much. And it was only last week I spotted micro mini denim skirts with knickers attached in Camden—15-year old me would have worn these to the school disco. But that doesn't mean I'll be wearing them again. The thing is, though, while not all trends need to be repeated by us millennials, there are some Y2K fashion items (basically anything that was worn between the years 1999 and 2000) that I would welcome back, and they all have one thing in common: they're denim.

While I love my favourite Levi's and will always stick to my fail-safe straight leg styles, sometimes it's good to give your denim collection a shake up. And for 2025, a lot of styles coming out would have previously been worn by the likes of Destiny's Child, Britney Spears and Rihanna back in the early '00s. Whether it's bootcut jeans (yes, really), halter denim waistcoats or mocha mousse washes, here are 5 key Y2K denim trends that are bound to make you feel nostalgic.

1. Bootcut Jeans

Alyssa wearing bootcut jeans

(Image credit: @alyssainthecity)

Style Notes: Bella Hadid wore bootcut jeans towards the end of last year, so now we all want to wear bootcut jeans. Previously loved by the likes of Britney Spears and J Lo, they're now back and about to be bigger than ever for 2025. But not literally, the way to wear these are skinny on the top and slightly flared at the bottom—don't confuse them with full-on seventies-style flares.

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2. Printed

April wearing printed denim

(Image credit: @aprillockhart)

Style Notes: Most frequently spotted on Christina Aguilera circa 1999, printed denim in all forms were a staple. And April, along with so many other stylish women on Instagram, are bringing it back. I love this uplifting flower print set that puts the fun back into classic blue denim.

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3. Mocha Wash Jeans

Chanel wearing brown wash jeans

(Image credit: @chanelmckinsie)

Style Notes: We all know mocha mousse is the new burgundy, and it's translating into jeans, too. This light brown denim wash was key in the early '00s and it's back being worn with biker jackets and tonal knits. Come spring, you'll be wearing these with vest tops and ballet flats.

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4. Ripped Hotpants

Salome wearing shorts

(Image credit: @salome.mory)

Style Notes: Hands up who owned a pair of the skimpiest denim cut-offs? That's everyone, then. Salomé is showing us all what future summer outfits will look like with this frayed, ripped pair. But would you wave goodbye to your 2024 jorts in favour of these? We'll let you decide.

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5. Halter Tops

imani randolph wearing denim halter top

(Image credit: @champagnemani)

Style Notes: Waistcoats dominated everyone's outfits last year, and now halterneck denim iterations are about to take over for spring/summer 2025. Imani makes a case for double denim, and I approve. You can get in on the mini trend already thanks to the likes of Anthropologie and Reformation.

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Freelance Fashion Editor

Harriet Davey is a freelance fashion editor who has been part of Who What Wear's extended team since 2017. She previously worked in print at Look magazine and has since worked across print, digital and social for many other titles, including British Vogue, Stylist, Grazia, Refinery29 and Marie Claire. Also a stylist, Harriet has had the pleasure of producing cover shoots and editorials along with commercial shoots for brands including Boux Avenue, Watches of Switzerland, Benefit Cosmetics and Revolution. To add to this, Harriet also works in live TV styling for ITV’s This Morning.