TEXAS: Ashlee Simpson and Evan Ross celebrated their recent engagement at a lavish party on Wednesday night. The ‘Pieces of Me’ singer, 29, and the budding actor, who got engaged in Hawaii in January after only six months of dating, were joined by dozens of friends and family members, including the blonde beauty’s older sister Jessica Simpson, to toast their upcoming nuptials in Los Angeles. The party was extra special for the couple as Evan’s famous mother, Diana Ross, was also celebrating her 72nd birthday.–EXPO