Porter began her screen career playing guest starring roles on television dramas include Law & Order, New York Undercover, Brooklyn South, and NYPD Blue. She had a recurring role as housekeeper Gwen Walker in the NBC period drama American Dreams from 2002 to 2003. In film, she made her debut in 1992 Leopold/Loeb New Queer Cinema feature, Swoon. She went to appear in small roles in films The Peacemaker (1997), Gia (1998), Body Shots (1999), The Fluffer (2001), and The Salon (2005). In 2005, Porter played Ricky in the film adaptation of Ruben Santiago-Hudson's play Lackawanna Blues for HBO. She received Black Reel Award for Best Supporting Actress: Television Movie/Cable for her role. She went to appear ER, Prison Break, Without a Trace, House, and Law & Order: Special Victims Unit.