Alison Ann Sweeney (born September 19, 1976) is an American dramatic actress, reality show host, director and author. Sweeney is best known for her portrayal of Samantha "Sami" Brady on NBC's Days of Our Lives, a role she has played under contract with the show since January 6, 1993. In this role, she has earned a Daytime Emmy Award nomination, four Soap Opera Digest Awards and a Fan Voted Daytime Emmy Award. In 2007, she became the host of The Biggest Loser.