<P> After high school, she landed the role of Jessica Wakefield in the television series Sweet Valley High (twin sister, Cynthia portrayed Jessica's twin, Elizabeth). During the run of Sweet Valley High, the girls made their film debut in the drama The Basketball Diaries (1995) alongside Leonardo DiCaprio . </P> <P> After Sweet Valley High was canceled in 1997, Daniel continued acting in films and television series including a stint on Dawson's Creek in 1999 and a role in the TBS television movie On Hostile Ground the following year . In 2001, she appeared as David Spade's love interest, Brandy, in Joe Dirt . In 2002, Daniel played one of the lead characters in the short - lived Fox series That' 80s Show . </P> <P> In 2002, she played Eric Forman's cousin Penny on That' 70s Show . Daniel also appeared on the show It's Always Sunny in Philadelphia as a transsexual named Carmen . She teamed with the Wayans Brothers for their films White Chicks (2004) and Little Man (2006). That same year, she appeared in the VH1 television movie Totally Awesome before landing a lead role in The CW Television Network's half - hour comedy The Game, which she starred in until 2011 . However, she would return to the show in 2014 . In February 2010, she was cast in the Brothers Strause thriller Skyline; the film was released on November 12, 2010 . </P> <P> In March 2014, Daniel revealed that in 2011, she was diagnosed stage IV non-Hodgkin's lymphoma, for which she underwent chemotherapy . As of 2014, she was cancer free . </P>

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