Justin Bieber celebrated his 21st birthday with friends and family at home, where he turned up with champagne and sparkler fireworks. A video of the famed pop star dancing shirtless to 50 Cent's "In Da Club" surfaced online, which showed Bieber turning up with a bottle of champagne.

While Justin was living it up with friends on his birthday, the singer is about to get brutally roasted on Comedy Central's upcoming Roast, which will be hosted by Kevin Hart. He joked about agreeing to do the show on Twitter, saying, "They said only if I provided them w/ more material so for a year now I have worked hard. ... Finally after all that hard work for my 21st bday it's happening."

Check out more photos from Justin's birthday above.

Source: Daily Mail