Out of Millions of #10YearChallenge Posts, These Are the Ones You Need to See

If you have picked up your phone at all over the past 48 hours, no doubt you will have been bombarded with the #10YearChallenge. It's a simple idea: You just share a recent picture of yourself alongside a picture from 2009. Many celebrities and influencers have shared these flashbacks on their feeds—we love Aimee Song's look back to her early blogging days and Alexa Chung wearing hot pants, a Breton top and shorts. A number of stars look almost exactly the same, such as Jennifer Lopez, Reese Witherspoon and Jessica Biel, making this social challenge the ultimate humble brag. 

There are some people who won't be partaking in this challenge, such as the Olsen twins, Kate Moss, the Duchess of Sussex and Cambridge and Sienna Miller, but we've delved into the archives so we don't miss out on some of the best fashion moments from 2009. 

2009 Fashion Moments:

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Style Notes: This Kate Moss holiday look is one of her most iconic outfits—and still looks amazing a decade later. 

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Style Notes: We couldn't resist posting another Kate Moss flashback too. Here she is wearing Marc Jacobs to the Met Gala. 

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Style Notes: In 2009 Kate Middleton was still wearing wedge heels in the grass. 

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Style Notes: This was the year that Mary-Kate and Ashley Olsen wore bug-eye sunglasses and leggings as they sat front row at Chanel. 

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Style Notes: Sienna Miller wore a micro bubble-hem baby blue dress for Fashion Night Out with Anna Wintour. 

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Style Notes: Sarah Jessica Parker put on her newspaper print dress for Sex and the City 2, which yes is 10 years old. 

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Style Notes: Victoria Beckham wore a fur stole, Birkin bag and leather leggings for a trip to Monoprix. 

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Style Notes: This Agyness Deyn was one of the most iconic fashion moments from 2009. She wore a bubble-hem dress with sheer knee-highs to the Burberry show. 

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Style Notes: Alexa Chung wore a trench coat and mini black dress and ankle boots to the Burberry show. 

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Style Notes: Meghan Markle pre her royal family days, wearing flip-flops and a black shirtdress.