Ashlee Nicole Simpson (born October 3, 1984 in Waco, Texas) is an American pop rock singer-songwriter and actress. Simpson, who is the younger sister of pop singer Jessica Simpson, rose to prominence in mid-2004 through the success of her number-one debut album Autobiography and the accompanying reality series The Ashlee Simpson Show. Simpson received widespread criticism when she used a pre-recorded vocal track on Saturday Night Live in October 2004.