Foster guest-starred as herself on the HBO series Entourage, in which she had a romantic tryst with character Vincent Chase (played by actor Adrian Grenier) before appearing on Jimmy Kimmel Live! in the episode "Talk Show". She briefly hosted Entertainment Tonight spin-off ET on MTV in 2002. Based on that she was cast as the lead femme fatale in The Big Bounce in 2004, a remake of a movie adaptation of the same novel by Elmore Leonard. She also appeared in the Backstreet Boys video "Shape of My Heart". In 2005, she played crime-fighting lesbian spy Amy Bradshaw in Angela Robinson's 2004 film D.E.B.S.. In 2009, she signed on for the major recurring role of Jen Clark on The CW's teen drama series 90210. Additionally, Foster stars in the science-fiction film Psych 9, which was directed by Andrew Shortell.
Foster is married to tennis player Tommy Haas; on November 15, 2010, Haas announced on his website that Foster had given birth to a baby girl, Valentina. Sara is the daughter of music producer David Foster.
|1999||D.R.E.A.M. Team||Model (uncredited)||Television film|
|2004||The Big Bounce||Nancy Hayes|
|2004||Entourage||Herself||Episode: "Talk Show"|
|2005||Crossing Jordan||Tammi Eldridge||Episode: "Family Affair"|
|2005||CSI: Crime Scene Investigation||Amy Maynard||Episode: "Unbearable"|
|2006||South Beach||Arielle||Unaired pilot|
|2008||Bachelor Party 2: The Last Temptation||Melinda||Direct-to-DVD|
|2008||The Other End of the Line||Emory Banks|
|2009–2012||90210||Jennifer "Jen" Clark||23 episodes|
|2010||Psych 9||Roslyn Hanniger|