Happy birthday Justin Bieber! It’s hard to believe that Bieber is still only 22, but after a massively successful 2015, the singer treated himself to a lavish early birthday party on Saturday at his Bel Air mansion. Bieber officially turns 22 today (March 1st) but it looks like he may be still recovering from his weekend birthday bash.

The guestlist for Bieber’s birthday including friend and manager Scooter Braun, BFF Alfredo Flores, Joe Jonas and Sean “Diddy” Combs. On Instagram Diddy shared a black and white video of him dancing with the birthday boy, writing: ‘Had to give lil bro that official #BadBoy Jacket for his Birthday @justinbieber #jb22 #CirocNights The Only Way!!’

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The guestlist also included two of Bieber’s rumoured romantic interests. Kourtney Kardashian and Hailey Baldwin. In a pic shared by Alfredo Flores Kourtney could be seen posing with some of Justin’s pals, which will surely only fuel rumours of their romance.

A video posted by Puff Daddy (@iamdiddy) on

The pair were first reported to be dating back in December, with a source telling US Weekly: “Justin bragged to friends recently that he has been hooking up with Kourtney Kardashian.”

But in January Bieber was linked to Baldwin again, after he posted a pic of the pair kissing on Instagram. According to US Weekly, guests at Bieber’s party were asked not to take photos, but were also encouraged to use the hashtag #JB22.

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On Instagram images from the night were shared by Diddy, Flores and Braun, who all sent out their birthday love to the singer. Since today's officially his birthday, we're expecting Justin to be celebrating again tonight, but it looks as if Saturday night’s bash will be hard to beat.