Denise Truscello/WireImage
August 14, 2011 03:15 PM

Joe Jonas got a jumpstart on his 22nd birthday celebrations in Las Vegas – in a big way.

Starting off Saturday, Jonas, whose actual birthday is Aug. 15, caused a splash at Liquid Pool Lounge when he spent the afternoon poolside in a VIP cabana with pals.

“Female fans surrounded the area, trying to get a glimpse of [Joe] in his bathing suit,” a source tells PEOPLE.

Following his fun in the sun, Jonas and his entourage then headed to the Bellagio Hotel where they were treated to a meal from Akira Back, the executive chef at Yellowtail Japanese Restaurant & Lounge.

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After dinner, Jonas and friends made a quick stop at Deuce Lounge, where they played blackjack – and drew another crowd.

“Joe was swarmed by nearly 20 female fans dying to get an autograph or photo with [him],” the source says. “After signing a few autographs and meeting with fans, Joe finally made it to Haze Nightclub where he rocked the crowd with a special live set, performing tracks off of his debut solo album FastLife.”

“It’s a coming-of-age record,” Jonas told PEOPLE at the event. “I want to present it to people my age – a little bit older.”

The performance, which ended at around 2:30 a.m., left Jonas, who will soon join Britney Spears on her European tour, in the VIP area where he was “chatting with a bevy of beautiful girls.” He also received a special keyboard-shaped birthday cake.

“Girls were pushing to get near him,” another source says. “He was definitely loving the attention.”


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