Celebrities at the 20th Annual Pediatric AIDS Foundation Pics

It's funny how A-listers don't attend these events. It's great PR for the C and D-list crowd, but the more famous-er and richer you are, the less you show your face with the rest of the D-list, even if it's for a worthy cause.

Ashlee Simpson-Wentz, hubby Pete Wentz and their big baby Bronx attended the fundraiser. Denise Richards was also in attendance. Denise is always at fundraisers, as is Lauren Conrad and Nick Lachey. Something tells attendees receive a gift bag that's filled with pure awesome.