Justin Bieber's 'Worst Birthday' Ends Abruptly After Confrontation With Club Security

Looks like Justin Bieber's happy birthday had a very unhappy ending. Shortly after heading out to celebrate turning 19 years old on Friday, the singer returned to Twitter with a short but telling summary of his night.

"Worst birthday," he tweeted to his more than 35 million followers. The tone of the message was in stark contrast with his excitement from earlier in the day, when he wrote, "Gonna be fun tonight. Thanks to everyone for all the birthday wishes. 19!"

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So what went wrong? A source at London's Cirque du Soir, where the "Nothing Like Us" crooner was celebrating with friends including Will Smith's son Jaden Smith and British singer Ella-Paige Roberts Clarke, tells Us Weekly that there was a confrontation between Bieber's team and security at the venue. The source of the scuffle was Smith, who at 14 isn't old enough for the club scene.

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"There was never any mention of Jaden being there, so when he showed up, it caused problems," the insider tells Us, noting that Bieber and his entourage were at the club for just 15 minutes or so before the incident. "They could have stayed if Jaden left, but Justin wanted to be loyal to his good friend."

The pop star's birthday wasn't a complete bust, though. One night earlier, he and his pals partied past dawn at the members-only after-hours club BLC (British Luxury Club) in London. From there, they headed to Edgware Road for some snacks before finally calling it a night at 6 a.m.

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Later, before going to Cirque du Soir, Bieber went on a shopping spree at Selfridges, where he picked up some Christian Louboutin sneakers, Hermes accessories, and a ton of Balmain and Givenchy swag.

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