Reality star Heidi Montag hosted the third Anniversary of Crazy Horse III Gentlemen's Club in Las Vegas on Friday night.

The former "Hills" star wore black leather shorts, a velvet and sheer top, and strappy black sandals - appropriate attire for the Sin City event.

Montag recently opened up to Access Hollywood about her plastic surgery regrets.  She's had several procedures, including a nose job, liposuction, a chin reduction, and breast and butt augmentations.

"I should have researched it more and I wasn't really told the repercussions and what would happen emotionally and physically and how much pain I'd be in," she explained.

Montag has had a difficult time transitioning to life following her appearance on "The Hills." Former BFF Lauren Conrad has been involved in book and fashion ventures, while Kristin Cavallari recently had a baby. Montag has released two albums.

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