Jenna Leigh Green (born August 22, 1974) is an American actress and singer best known for her performances as Libby Chessler on the television show Sabrina, the Teenage Witch and on Broadway and on tour in the musical Wicked. Green was born Jennifer Leigh Greenberg in West Hills, California to an actress mother and a musician father. She was raised in Simi Valley, California with her twin sister Jessica and younger sister Becca in a family of actors and musicians. She began to perform in school and community theatre productions by age 12 and later began to appear in commercials and television programs, as well as a few made-for-TV movies.After graduating from Simi Valley High School, Green appeared for several seasons as Libby Chessler in the television series Sabrina, the Teenage Witch beginning in 1996. She also performed in guest spots on television shows.