Ashlee Nicolle Ross, (née Simpson; born October 3, 1984), is an American recording artist 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 notoriety when she attempted to lip-sync with a pre-recorded vocal track on Saturday Night Live in October 2004.

Following a North American concert tour and a film appearance, Simpson released a second number-one album, I Am Me, in October 2005. Her third album, Bittersweet World, was released in April 2008. The following month, she married musician Pete Wentz and announced that they were expecting a child. On November 20, 2008, Simpson gave birth to their son, Bronx Mowgli Wentz. Simpson filed for divorce on February 8, 2011, citing "irreconcilable differences."