Marley grew up in Eagle Rock, California. Her mother, Carol, was a teacher and former singer and her father, Christopher Shelton, worked as a director and producer. She has three sisters: Koren, Erin and Samantha Shelton. Both of her parents were involved in local theater projects, but as a teen, Marley was never interested in life on the stage. While at Eagle Rock High School, she was a varsity cheerleader, was voted Prom Queen and held part-time jobs at stores like Contempo and Wet Seal.
Her high school prom date was with her boyfriend at the time - Buffy the Vampire Slayer actor, Nicholas Brendon. He bought her 100 roses, wore a tux and drove a black convertible Mustang. Marley said that he "totally did it right". Daughter of director Christopher Shelton Engaged to producer Beau Flynn. [July 2001] Ranked #98 in Stuff magazine's "102 Sexiest Women In The World" (2002) She was announced for the part of "Annabeth Schott" in The West Wing's 6th season but was replaced by actress Kristin Chenoweth when the character was aged a bit and submitted to a few changes. Sister of Samantha Shelton. Studies acting with Ivana Chubbuck.