Kristina and Karissa Shannon (in black at centre) - The 82-year-old tycoon Hugh Hefner recently announced that Kristina and Karissa Shannon might become his new girlfriends after Holly Madison walked out of his life.

A model walks the runway at the Beach Bunny Swimwear Spring 2009 fashion show during Mercedes-Benz Fashion Week held at Smashbox Studios on October 13, 2008 in Culver City, California.