Justin Bieber News: Collapses on Stage in London; Rushed to Hospital with Breathing Problems [Breaking]

Age 19 proves to be unlucky for pop singer Justin Bieber as his "birthday week" hits an all time low tonight.

The Biebs reportedly collapsed on stage at London's O2 arena on Thursday night after complaining about breathing problems throughout the performance, reported People.

"He got oxygen from emergency personnel. He insisted on finishing the show," his rep tells E!. "He is on the way to the hospital right now."

Arena sources tell us that Bieber informed the crowd that he wasn't feeling well before going backstage to get checked out. After getting oxygen, Bieber ignored a doctor's recommendation and returned to stage about 10 minutes later to complete his last 4 songs for his loyal fans, according to E! News.

Beliebers showed their support for their idol with a huge standing ovation as Justin stumbled back stage and was finally taken to the hospital.

Bieber's manager, Scooter Braun, got on stage to explain to the crowd what was going on, according to YouTube videos of the show.

"Justin got very light of breath. The whole show he's been complaining, and he's backstage with the EMTs and the doctor," Braun announced. "They're telling him that they want him to go see somebody and see what's going on with his lungs."

Justin was transported to the hospital directly following the show and E! has been told he's still there receiving treatment.

TMZ recently heard that Bieber in good spirits and feels OK, but doctors still want to evaluate him.

Bieber was spotted last night outside his London hotel wearing a gas mask, once again. Maybe Justin can finally justify his odd choice of accessory with his recent breathing problems?