By StyleWatch
November 01, 2010 02:00 PM

Giovanni Rufino/The CW

Looks like Queen Bees Blair Waldorf and Serena van der Woodsen will face some fierce competition for fashionable reign of the Upper East Side on tonight’s episode of Gossip Girl, when stylist to the stars Rachel Zoe makes a major cameo! “I have been a huge fan of Gossip Girl since the beginning and watch it every Monday with my girls,” Rachel told “So it was beyond exciting to do an episode of the show and meet all of the brilliant people both behind and on camera. And obviously my favorite part of the experience was the costumes–so major!” Dressed in a floor length Pucci gown with Alexis Bittar jewelry, the fashion darling will get down and dirty at Blair’s 20th birthday party on tonight’s episode. So which character’s closet does Zoe envy? “I identify the most with Serena’s style–her wardrobe is everything–sexy, glamorous and adventurous!” Rachel told And with all of that sass and style in one room, we can’t wait to see what happens. –Jessie Goldberg