Chyler Leigh - Set Three

Chyler Leigh (born Chyler Leigh Potts on April 10, 1982) is an American actress. In ABC's Grey's Anatomy, Leigh, seen as the woman in Joe's bar, tries to pick up Derek Shepherd. In the third season finale it was revealed she will be playing Lexie Grey, Meredith's half-sister. She was made an official series regular for season four.