Playboy pinup Holly Madison showed up at the Laura Croft 27th birthday celebration at Tao Nightclub in Las Vegas on February 4 practically spilling out of her little black dress. See more photos after the jump!

Holly kept it fun with a multi-jeweled necklace, a playful wrist watch, and a cocktail dress with pockets. But we think her chest is the main attraction – and that’s not necessarily a good thing. Reign it in, Holly!

Best known for her ongoing association with Playboy – as a centerfold and as one of Hugh Hefner’s former paramours – the reality star appears in “Peepshow” at Planet Hollywood in Las Vegas. She also will star in her own reality show, “Planet Holly,” which chronicles her life in Sin City.

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