• Share
  • Tweet
  • Share
Justin Bieber

Courtesy Denise Truscello/WireImage

Where's the first place you go after enduring a Comedy Central Roast? To Las Vegas, of course!

Just hours after Martha Stewart, Kevin Hart, Snoop Dogg and other famous faces took some serious jabs at Justin Bieber, the "Baby" singer decided to have a little fun on his own terms by celebrating his 21st birthday at OMNIA Nightclub inside Caesars Palace.

Joined by a number of close friends, the Biebs posed for photos on the red carpet before being ushered inside The h.wood Group's Heart of OMNIA where he was joined by Kris Jenner and boyfriend Corey Gamble, Miguel, Katharine McPhee, Ashley Benson and Scooter Braun.

"He was in great spirits," a source told E! News. "He was having a great time with his friends…He looked good."

Justin Bieber

Gabe Ginsberg/Getty Images

As a performer, Bieber couldn't help but jump in the DJ booth for a pop-up performance of old school R&B mixed with today's biggest hits. Eyewitnesses later spotted him dancing on top of the DJ booth as DJ Ruckus spun. 

He was then treated to an extravagant birthday cake made to replicate a 1965 Lincoln Continental, a gift he received from partner John Shandi for his latest milestone.

"Tonight was one of the best nights ever," Bieber tweeted after leaving the nightclub at 4 a.m. "Thank you to everyone involved. Thank you."

True Beliebers know the singer's actual birthday occurred exactly two weeks ago. Instead of throwing a lavish bash, however, Bieber celebrated with close friends including Hailey Baldwin, Yovanna Ventura and others.

As for what's to come in the year ahead, the Biebs has high hopes that fans can forgive him for some of his biggest mistakes. In return, he promises not to disappoint.

"I am looking forward to being someone you can all be proud of," he shared at the Comedy Central Roast of Justin Bieber airing March 30. "Someone close to me once said, 'It's how you rise from a fall that truly defines you as a man.' I'm excited for that challenge. And I want to say thank you for taking this journey with me."