Gossip Girl: The Best Style Moments Ever

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Episode: Hi, Society

When it came to their school uniforms, Serena van der Woodsen opted for short skirts and V-neck tops, while Blair Waldorf went for classic blazers mixed with bright tights.

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Episode: Much I Do About Nothing

When Lily van der Woodsen and Bart Bass tied the knot, Serena wowed in a canary yellow Ralph Lauren dress, while Blair donned a pink Collette Dinnigan dress with a bubble hem (and a matching headband, natch).

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Episode: Summer, Kind of Wonderful

Blair's Hamptons-chic alice + olivia floral frock was almost shown up by Chuck Bass' impressive ability to pull off two plaid patterns and a straw fedora.

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Episode: Summer, Kind of Wonderful

Dressed in head-to-toe white for a Hamptons soiree, Serena looked like a Greek goddess in an Oscar de la Renta maxi dress, while Blair sported a form-fitting Marc by Marc Jacobs mini.

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Episode: The Serena Also Rises

Sorry S., but even the Upper East Side's "it" girl couldn't pull off this emerald green Eleanor Waldorf original. And what was with that frizzy, bouffant hairstyle?

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Episode: Valley Girls

If only every girl was so lucky to wear a one-of-a-kind Marchesa Black Feather Gown to her senior prom. (Man candy Nate Archibald isn't a bad accessory, either.)

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Episode: The Goodbye Gossip Girl

Perhaps a tribute to Wiz Khalifa's "Black and Yellow"? Blair paired a David Szeto top with a bright yellow Milly cardigan. On the darker side of things, Little J rocked a Joie lace top and a Theory pleated skirt.

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Episode: The Freshman

Pictured here in one of her iconic headbands (this one is by Paige Gamble), Blair's structured Victoria Beckham dress set her apart from her new hipster classmates at NYU.

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Episode: Belles de Jour

Bored with "summering" in the Hamptons, Serena and Blair escaped to Paris, where they shopped up a storm while wearing some of the show's chicest looks to date.

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Episode: Easy J

By the fourth season, Serena had become notorious for showcasing her two best assets (and we don't mean her mile-long legs). Who could forget this cleavage-bearing Maxime Simoens jacket?

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Episode: War at the Roses

There's no doubt this sexy J. Mendel gown helped Serena reel in Columbia professor Colin Forrester.

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Episode: Juliet Doesn't Live Here Anymore

This Zuhair Murad lace gown was the star of the episode where Juliet was finally exiled from the Upper East Side.