Photo Finish: Bootylicious Babes Square Off

A bootylicious battle between two of Hollywood's most beautiful babes? You'd think Beyonce would have this in the bag, right? She did create that term, after all.

But Jessica Simpson and her backside won't go down without a fight (seriously, ask Nick Lachey). We'll leave it to you, the readers and fans. Which singer and occasional actress has the most appealing ass-et?