Most "Spankable" Bottom on the Planet.

There are endless websites, blogs, groups and forums dedicated to this topic, which I find mostly boring. However, and this coming from someone that has had the good fortune to punish quite a few very well proportioned bare bottoms, Jessica Biel has the best looking backside on earth...and she was born with it, plus worked out to achieve and maintain it. Hers is not a BBL or due to some sort of plastic surgery.