Hugh Hefner's favorite girlfriend Holly Madison is planning to get pregnant.

The blonde beauty sparked rumors she was pregnant when she didn't drink on a recent holiday in Monaco. Fellow live-in girlfriend Bridget Marquardt has revealed, while Holly is hoping to have a baby with Hugh, she is yet to conceive.

For all of his life, Hugh Hefner has been a ladies' man, but you know what they say - three time's the charm.

It's been said that Hef is set to marry his favorite girlfriend Holly Madison.