Hot bikini bodies run in the family!

PHOTOS: The Sexiest Sisters In Hollywood

RadarOnline.com has photos of the sexiest sisters in Hollywood -- stripped down and showing off their awesome assets in barely there bikinis.

Her Royal Highness Kate Middleton has an equally sexy younger sister, whose bombshell body and flawless face earned her the nickname Her Royal Hotness! It is nearly impossible to tell Kate and Pippa apart, especially when they show some skin in white-hot bikinis.

PHOTOS: Bikini Babes Who Play With Pro Athletes