The eldest daughter of former vice presidential candidate Sarah Palin will make her acting debut this summer on ABC Family's The Secret Life of the American Teenager. Bristol, 19, will play herself in a third season episode in which she befriends Amy (Shailene Woodley) at a music camp for teen moms. "I am thrilled to be on this show and to be a part of a program that educates teens and young adults about he consequences of teen pregnancy," Bristol said. [THR]