Justin Bieber Amazes Audience in Las Vegas

There is just no stopping Justin Bieber.

The teen pop sensation is traveling across North America for 'My World tour'.

After three days of performing in California, the 16-year-old pop singer also took the stage of The Theatre for Performing Arts at Planet Hollywood Resort & Casino on July 24.

Performing his hit singles like "Baby", "One Less Lonely Girl" and more, Bieber wows the sold-out crowd with his full energy performances as well as his flawless vocal and boyish look. He tweeted  after the gig, "What happened in Vegas stays in Vegas...except in my case where everyone at the show saw everything :) Thanks VEGAS for always showing love!"

After Las Vegas, Nevada, Justin Bieber flew to Glendale, Arizona on Sunday, July 25 to perform for his fans.

Paris Hilton and Sam Worthington Spotted at Las Vegas Nightclub

During Memorial Day weekend, Heiress Paris Hilton partied up at Grand Opening of Encore Beach Club and Surrender Nightclub in Las Vegas, Nevada.

Paris rocked the event as she joined on stage Kaskade Sundays and started dancing and singing along with the group's song "I'm in Miami B**ch".

Obviously enjoying the performance was "Avatar" star Sam Worthington.

The actor arrived at the venue with an eco-friendly bag.  Sam watched the party scene from a second story cabana while partying with a large group.

Aside from Paris and Sam were "Dancing with the Stars" contestant Stacy Keibler and New Orleans Saints running back Reggie Bush.

Stacy and Reggie went back to the venue for a second day with close friends and his sister.