Holly Madison appeared with Tiger Cub Princess at Planet Hollywood in Las Vegas yesterday. We're having a hard time determining which one is cuter. What do you think? See more photos after the jump.

Paris Hilton's ex-boyfriend, rocker Benji Madden, is reportedly dating Hugh Hefner's former Playmate Holly. Holly, who briefly dated illusionist Criss Angel after splitting from Hefner last year, has taken one step closer to a true confession about her new man. Friends say Benji is her secret crush.

Holly made her first boyfriend wait months for sex so she could gradually "bring down" her bra size. She used to stuff her bra with tissue paper to look less flat. She had a boob job in 2001, just after she moved into the Playboy Mansion, and she has never looked back.

Image © PR Photos