1 of 6
Ashlee Simpson and boyfriend Pete Wentz celebrate her 23rd birthday with, like, a totally awesome party: an '80s prom night theme bash at her parents' house in L.A. earlier this month.
Next Photo
Photos, news and a full bio
Credit: Michael Caulfield/WireImage
Updated: Tuesday Oct 16, 2007 | 06:00 AM EDT
Watch It
More On People.com
See Photos
More News