Happy Birthday, Jess!

With a little help from some very famous friends, Jessica Simpson celebrates the big 2-5 with a blowout bash

A BLOWOUT NIGHT

"The entire night was perfect," says Simpson of her July 9 bash at her parents' Encino, Calif., estate. "I'm still smiling!" As 150 guests – including Jake Gyllenhaal, Wilmer Valderrama, Mandy Moore and little sis Ashlee – looked on, Simpson worked at the trick candles on her Betty Boop cake. "She's full of hot air, but even all of her wind couldn't blow them out," jokes husband Nick Lachey.