Usher celebrated his birthday at a star-studded bash on Monday night (14.10.13).
The 'Scream' hitmaker was joined by his protégée Justin Bieber, his manager Scooter Braun, Sean 'Diddy' Combs and the rapper's girlfriend Cassie for his party at Bootsy Bellows nightclub in West Hollywood, Los Angeles.
Usher was presented with a boxing ring-themed cake with a baby photo of himself in the middle.
Pictures on his Instagram site also showed the festivities included a dancing competition.
Several of his other celebrity friends wished him a happy birthday on Twitter.
Ellen DeGeneres wrote: ''Happy birthday, @Usher! He's one of the most talented musicians and performers I've ever met. And I've met Weird Al Yankovic.''
His former 'The Voice' co-star Shakira tweeted: ''Dear @Usher, a great colleague, an exemplary artist and human being! Happy bday and many blessings for you today and always!! Shak.''
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