Fans swarm singer Nick Jonas at Hyde Bellagio in Las Vegas

Fans swarm singer Nick Jonas at Hyde Bellagio in Las Vegas
Nick Jonas, left, and Joe Jonas partied at Hyde for the nightclub's third anniversary at the Bellagio. (Hyde Bellagio)

Singer Nick Jonas spent his Saturday night helping Hyde at the Bellagio celebrate its third anniversary. The member of Jonas Brothers hosted the party at the nightclub overlooking the Fountains at Bellagio with his girlfriend and one brother in tow.

But first it was an autograph session with fans who swarmed him as he walked across the casino floor.

His girlfriend

Olivia Culpo

, Miss USA 2012, is no stranger to the spotlight either. She took her turn in front of the cameras as well.

Nick’s older brother Joe Jonas joined the group inside and they sat at a VIP table underneath the club’s

deejay

booth as flashing lights and giant letters spelling out “N-I-C-K” greeted them.

DJ Direct played Jonas’ single “Jealous,” and Jonas accepted a massive cake to congratulate the nightclub on three years in operation.