Fashion Face-Off: Rachel Bilson vs. Leighton Meester

Rachel Bilson used to star on The OC. Leighton Meester stars on Gossip Girl. Both are cute brunettes, and both those shows were created by Josh Schwartz.

The similarities don't end there. Bilson flaunted a sheer Chris and Jaime romper while out in L.A., while Meester hit a concert in NYC in the floral one-piece.

While Leighton recently denied the existence of her rumored sex tape, there's no denying she looks good! Who do you think wore it better? Vote below!

Who wore it best?