Hugh Hefner's girlfriends Karissa and Kristina Shannon at the Playboy Store in Las Vegas.
Karissa and Kristina Shannon are American models and twin sisters.Both became overnight sensations when Hugh Hefner of Playboy chose them as his next set of girlfriends, replacing Bridget Marquardt and Kendra Wilkinson. Crystal Harris has replaced Holly Madison as his number one girlfriend with whom he shares a bed. They have also appeared on The Girls Next Door.
