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.

Kelli Brianne Garner (born April 11, 1984) is an American actress. Her credits include Man of the House, The Aviator, Bully and Thumbsucker. She also co-starred in the Green Day video Jesus of Suburbia (she does not, however, play the character Whatsername, since Jimmy does not meet Whatsername until he leaves home, which he does at the end of the song). In December 2005, Garner starred in the Off-Broadway production of Dog Sees God: Confessions of a Teenage Blockhead at the Century Center for the Performing Arts. Garner, who was born in Bakersfield, California, enjoys playing guitar and shopping. She currently resides in Calabasas, California.

Rachel Lauren Stevens (born April 9, 1978) is an English singer and actress and an occasional model who lives in Hampstead, London. Formerly with the successful pop group S Club (7), she launched a solo recording career and has released seven singles and two albums to date in the UK.

Jennifer McCarthy (born November 1, 1972) is an American model, comedian, actress and author. She first appeared in Playboy magazine in October 1993 and was named Playmate of the Year in its June 1994 issue. She later began a career in television and film and has recently started writing books. She and fellow model and actress Pamela Anderson are generally considered the most recognizable Playboy Playmates.