Iconic Y2K Halloween costume ideas to wear this October

The time has come to embrace the nostalgia of the early noughties! Filled with bold outfits, wild celebrity moments and catchy pop music, the 00s provide endless inspiration for Y2K Halloween costume ideas.

Depending on your age, these costume ideas will either take you on a trip down memory lane or celebrate Y2K fashion in all its glory. It's a fashion trend that's made a huge resurgence in 2025, making it the perfect pick for this year's fancy dress outfit.

Take a look through these iconic Y2K Halloween costumes and dress up as your favourite 00s diva this October.

1. Anna Coleman from Freaky Friday

Starring Lindsey Lohan in one of her most iconic roles, Anna from Freaky Friday is the perfect Y2K Halloween costume. It combines early 00s emo with Avril Lavigne skater energy. It's also bang on trend since the sequel was released this year!

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2. Paris Hilton

Paris Hilton was the IT girl of the 00s, and her outfits were equal parts outrageous and fabulous – perfect for a Y2K Halloween costume. From Valeour tracksuits to her infamous 'Stop Being Poor' t-shirt, this costume will be the ultimate diva look for October.

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3. The Cheetah Girls

@itsshainajay Cheetah Girls, Cheetah Sisters 🫶🏽🐆 #cheetahgirls #halloween #halloweencostumeideas ♬ original sound - Kevin May

Any Disney Channel star makes a brilliant Y2K costume (think Hannah Montana, Lizzie McGuire), but The Cheetah Girls are our favourite. It makes the perfect group Halloween costume, and nothing screams Y2K more than velvet two-piece outfits, leopard print and chunky gold jewellery.

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4. Mia from The Princess Diaries

@isabelclanc I found the dress on @Poshmark and everything else is from @Amazon Fashion #y2k #theprincessdiaries #halloweeninspo #2000s #00s #millennial #millennials #nostalgia #nostalgic #miathermopolis ♬ original sound - officialmyramusic

All stand for the Princess of Genovia! One of the hit films of the 00's, The Princess Diaries features so many amazing looks. We love this easy-to-recreate outfit, which is taken from the film's promotional poster. You only need five items: a white dress, white gloves, a tiara, black headphones and sunglasses.

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5. 00s Christina Aguilera

Known for her black and white striped hair and love of baker boy hats, Christina Aguilera was the fashion icon of the 00s. She has a full roster of amazing Y2K outfits you could take inspiration from, including this rock-look. Just don't forget to add her signature fake piercings.

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6. Bratz

@anahi.x0 🎸 These Rock Angelz are feeling so good!! Catch us at Supercon this weekend <3 🖤 #bratz #supercon #supercon2024 #bratzcosplay #cosplayers #floridasupercon #@CLEO @REN @Mariana Sierra @𝐅𝐞𝐥𝐢𝐱’𝐢𝐧 ♬ original sound - InkSylph

Another great group Halloween costume is to dress up as Bratz dolls. Chloe, Sascha, Yasmin and Jade served some golden Y2K looks in their time, so there's plenty of inspiration to choose from. For a more edgy look, go for the Bratz Rock Angelz franchise, or opt for outfits from the Bratz: The Movie.

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Discover more Y2K Halloween costume inspiration right here

We have over 200+ Halloween costume ideas for you to explore, including those for families, trios and toddlers.