LOS ANGELES, CA Friday Oct.12.2007 /netmusiccountdown.com/ -- Ashlee Simpson celebrated her 23rd birthday at her parents' house with an '80s-themed party on Saturday, with more than 200 guests. Of course sister Jessica was there, Wilmer Valderrama, and Kenna. Boyfriend Pete Wentz was the prom king to Ashlee's queen as they danced to Bryan Adams' "Everything I Do." "Now we can say we are high school sweethearts!" the Fall Out Boy bassist told People Magazine. He also made a wisecrack, saying he and Ashlee take the same amount of time to get ready "because I'm actually just her purse."