Sharon Lawrence is an American actress who has established her career mostly on TV. She started her professional career in the early 1990s. During this period, she had roles in several TV movies and guest-starred on TV shows. Her first main role on the small screen was as Sylvia Costas on NYPD Blue. While on the show, she starred as Gwen Leonard on the short-lived series Fired Up. She later had short-lived stints on the TV shows Ladies Man and Wolf Lake. Later in the 2000s, she had notable guest performances as Maisy Gibbons on Desperate Housewives and Linda Fusco on Monk. In 2007, she starred as Tess Wiatt on Hidden Palms, after which she starred as Jane on The Line. She also became known for her role as Bobbie Dobkins on Drop Dead Diva and Sylvia Baker on One Tree Hill. She recently played Margo Mierzejewski on Shameless.