This image was lost some time after publication.

When we heard today that Christina Ricci instructed her trainer to give her Jessica Biel's butt for her upcoming role in Speed Racer, we too remembered our longtime fascination with Biel's hard bottom. Even though Justin Timberlake famously praised the back door of Kylie Minogue, we're sure he's doing just fine enjoying his current girlfriend's assets. And considering we've had asses on the brain since Gisele thrust hers into our face this morning, we decided to just declare this Hump Day, well, Rump Day. Herewith, we present our picks for the top five best butts in Hollywood. And not to worry ladies; we'll be sure to devote an upcoming Hump Day to the male stars with the most appealing cushions for pushing.

This image was lost some time after publication.



5. Kim Kardashian: Losing ties with Paris didn't hurt Kardashian, mainly due to public interest in her gravity-defying behind, which has since landed her family a reality show and herself an endorsement deal with Bongo.

4. Jessica Simpson:: All that exercising in preparation for her role as Daisy Duke may not have given her any acting cred, but it make her butt worthy of filling out the trashtastic shorts of legend.

3. Jennifer Lopez: What Diddy likes, we like.

This image was lost some time after publication.



2. Jessica Alba: Not an Alba bikini photo crosses our screen without a dash of immediate regret on our part for not going to the nearest 7:30am pilates session that morning.

1. Jessica Biel: Well, sometimes photos simply speak for themselves.

[Photo Credits: CelebNewsWire, Red Reporter, TalkStink, Gag Report, Publisher's Weekly]