Ashley Nicolle Ross-Næss (née Simpson; born October 3, 1984), known professionally as Ashlee Simpson, is an American singer, songwriter, actress and television personality. She is the younger sister of singer and actress Jessica Simpson. Simpson began her career as a back-up dancer for her sister and appeared in television commercials at the age of 15. She later pursued acting and held a main role in the television drama “7th Heaven”. She gained additional exposure through the reality series “Newlyweds: Nick and Jessica”