Happy birthday Jessica Simpson! The singer celebrated her 27th birthday at the Silver Spoon Beach Body house in Malibu on Tuesday, but had to move the event after paparazzi tracked her down. Simpson donned a white summer dress to lunch with five pals at the private home rented out for celebrity events, and had planned an evening barbecue with more friends and family before changing the venue to her folks' place. "It was a private party and they wanted to keep it private," said a source close to the birthday girl. "She was there with all of her closest friends and family. She had a great time. It was a great night."