So where did Ashlee Simpson celebrate her 23rd birthday over the weekend? Her parents’ house, of course! The singer held an ’80s-themed party on Saturday, and more than 200 guests showed up -including sister Jessica, Wilmer Valderrama, Kenna and, of course, boyfriend Pete Wentz, who 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. He also made a wisecrack to the mag, saying he and his girlfriend take the same amount of time to get ready to go out “because I’m actually just her purse.” But apparently Saturday night didn’t totally exhaust the couple -the following night, they went to the Hollywood Style Awards at the Pacific Design Center in West Hollywood, California.

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