Fancy Fashion Face-Off: Blake Lively vs. Leighton Meester

Blake Lively and Leighton Meester both play integral characters we love on the hit show Gossip Girl. But in this fashion face-off, you can only choose one of them.

Lively, 21, showed off some leg and more in a stunning teal Versace gown, while Meester, 22, opted to keep it fun, playful and gorgeous in a Louis Vuitton dress.

Both stars shined at the “Model as Muse: Embodying Fashion” Costume Institute Gala at The Metropolitan Museum of Art in New York City on Monday evening.

Who looked best? Like choosing between models Miranda Kerr and Bar Refaeli, we know this is a difficult task. But tell us below in our informal survey ...

Which Gossip Girl star looked best?