In The CW's new drama, "Ringer," Sarah Michelle Gellar plays a double role, starring as beautiful twin sisters Bridget Kelly and Siobhan Martin. Bridget is six months sober and has been trying to turn her life around, only to become the key witness in a murder trial. Siobhan lives what appears to be a fairy tale life - a life where no one knows that Bridget exists - living in New York and married to the wealthy, handsome Andrew Martin (Ioan Gruffudd). It all changes when Siobhan mysteriously disappears and Bridget makes the split decision to take on her sister's identity. Gellar also serves as a co-executive producer on the show.

Gellar is best known for her iconic role as Buffy Summers in "Buffy the Vampire Slayer." She wrapped her seventh and final season of the critically acclaimed drama in May of 2003. Gellar also originated the role of Kendall Hart on ABC's daytime soap opera "All My Children," which earned her a Daytime Emmy Award in 1995 for Outstanding Younger Actress in a Drama Series.

Gellar's acting career has included several notable film roles including "Cruel Intentions," "Scream 2," "I Know What You Did Last Summer" opposite husband Freddie Prinze, Jr. and the blockbuster hit "The Grudge." No stranger to the world of voice over, Gellar has lent her voice in Liongate's "Happily N'Ever After," opposite Sigourney Weaver and Freddie Prinze, Jr, and can be heard as the voice of April O'Neil in Warner Brothers' "Teenage Mutant Ninja Turtles."

Born in New York City, Gellar currently lives in Los Angeles, California, with her husband and daughter.