Katy Perry Does An Impromptu 2 AM Performance At Haze Nightclub In Vegas!

Mon, January 25, 2010 3:18pm EDT by Add first Comment

Getty Images

Getty Images

Katy Perry sang “Waking Up In Vegas” and “Hot ‘N Cold” at ARIA Resort & Casino in Vegas

Songstress Katy Perry hosted a Waking Up In Vegas themed party at ARIA Resort & Casino’s new nightclub Haze Jan. 23 — and she wowed the clubgoers with an impromptu 2am performance! Katy performed two of her top hits Hot and Cold, and Waking Up In Vegas. The starlet who recently became engaged to British comedian Russell Brand, 34 was “laughing, dancing and drinking all night,” says our source. Other celebs that were spotted partying with Kate included actor Mickey Rourke, and Cobra Starship‘s Gabe Saporta. — Chloe Melas