Happy 27th birthday Leighton Meester! Take a look back at the Gossip Girl star's best beauty looks

GALLERIES

Happy 27th birthday Leighton Meester! Take a look back at the Gossip Girl star's best beauty looks

For a clean cut look, Leighton pairs a tight, top knot hairstyle with just a flicker of feline eye liner to show off her impeccably clear skin