Mazur began modeling and acting in her teens. One of her most well-known ad campaigns are the three TV commercials for Gap she did with Director Adam Daelay in 1999: "Everybody in Cords", "Everybody in Leather" and "Everybody in Vests" in which she sings. She has appeared in a number of widely released films in the past several years, including Torque, Dead Man Running, Monster-in-Law, Stoned and Just Married. She has also appeared in several television shows, including Castle, I: Miami, Cold Case, Strange World, Chuck, and Rizzoli & Isles.