Born in New York City, True wanted to be an actress ever since she was a child watching her renowned step-mother, Verona Barnes, perform in theater. Her first break came with a role on on the NBC sitcom "The Cosby Show" playing a friend of Theo's and she was brought back for three more episodes. Next up was a pilot for PBS entitled "Pathfinder", followed by the television special "Moment of Truth: Stalking Back" (NBC), "Tall Hopes" (CBS) and the ABC Afterschool Special, "Stood up".
True moved to Los Angeles in 1993 to act in her first feature, entitled "CB4", a rap parody with Chris Rock directed by Tamra Davis for Universal Pictures. True has also appeared in a recurring role on HBO's sitcom "Dream On", as well as in a short film called "Squids". She made guest appearances on several other television series including "Beverly Hills 90210" and also "Boston Common".
In 1994 she was seen alongside Alyssa Milano on the thriller, "Embrace of the Vampire" (New Line). Television movies followed including and "A Walton Wedding" (1995). It was in 1996 that the beautifull actress started getting noticed by the press, after appearing as a teenage witch in the cult-hit "The Craft". Following that came the indie flick "Nowhere" (1997), and then she played Dave Chappelle's romantic interest in "Half-Baked". During 1997, she also had a role on the ABC sitcom The Drew Carrey Show. In 1999, she was seen in another ABC sitcom, "Now and Again".
In September 2002, the show "Half & Half" premiered. Rachel plays one of the titular characters, Mona Rose Thorne. As of 2006, the show is still airing.