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Blonde or brunette? Blair's classy gowns vs. Serena's sexy dresses? Blair's Chuck or Serena's Dan?!

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• November 18, 2011The Super Sexy Looks At This Year's GQ Bash
• November 18, 2011Ashlee Simpson Is That You?
• November 17, 2011Nicki and Ricky's Steamy Campaign
• November 17, 2011Mary-Kate Olsen Fashion Time Warp

Since Gossip Girl made its debut in 2007, fans have constantly compared style stars Leighton Meester and Blake Lively.

It seems the two can't stop going toe to toe with one another, from their high profile big-screen endeavors to the A-list brands they represent (Vera Wang and Chanel respectively).

Gossip Girl's recent 100th episode celebration in NYC was no exception as the lovely starlets both showed up dressed to impress, Blake in a Marchesa fringe number, and Leighton in a white Balmain.

So who do you think won this round ... the beautiful Blake or the lovely Leighton?