It's been a rough week for Justin Bieber: Getting booed for being late, struggling to breathe mid-performance and fainting backstage, then caught on camera clashing with paparazzi.
But the 19-year-old pop sensation appeared to have recovered Friday for his final concert in London, singing and dancing to thousands of adoring fans at the O2 Arena.
Justin Bieber is escorted by a member of his security team outside his hotel in central London in this still image taken from video on March 8, 2013. (REUTERS)
Earlier Friday, the star made headlines when he got into an altercation with insult-hurling paparazzi, lashing out at a photographer with a stream of expletives as he was restrained by minders.
"Ahhhhh! Rough morning. Trying to feel better for this show tonight but let the paps get the best of me," the singer posted on Twitter soon after the altercation with the photographer, which took place as he got into a car earlier Friday. The scuffle was captured on video by Channel 5 News and widely broadcast by Britain's media.
"Sometimes when people r shoving cameras in your face all day and yelling the worst thing possible at u...well I'm human. Rough week," he wrote on the social networking site.
Justin Bieber performs in a concert at the Manchester Arena in Manchester, northern England in this February 21, 2013, file photo. Bieber collapsed on stage from shortness of breath during a performance in London representatives for the singer said, March 7 2013. (REUTERS)
The clash came just hours after Bieber said he was "getting better" following breathing problems he suffered during the previous night's concert. The star took a short break to go backstage, where he was given oxygen, and had to be briefly hospitalized for a check-up.
Bieber later posted a shirtless photo of himself in a hospital bed, saying he was getting better and listening to Janis Joplin.
The AP spoke to 18-year-old journalism student Prithvi Pandya, who shot the footage, to confirm its authenticity.
"When he started 'Beauty and a Beat' you could see he was struggling," said Pandya, who was near the front of the crowd. "He took lots of drinks of water, that seemed unusual, and he was really sweaty, sweating a helluva lot.
"Toward the end of it, he went backstage. We didn't see him fainting. They brought on dancers to entertain, and I knew something was wrong at that point."
The incident caps a difficult week for Bieber. He was forced to apologize to outraged fans who accused him of taking the stage almost two hours late for his first concert at the O2 on Monday. He insisted he was only 40 minutes late and blamed "technical issues." He took to Twitter to vent his frustrations with the media's portrayal of the incident.
Justin Bieber and Selena Gomez (REUTERS)
Selena Gomes Embarrassed with Bieber's behaviour
Singer-actor Selena Gomez has moved on in life and has no plans to reconcile with teen pop star Justin Bieber as she finds his recent wild behaviour embarrassing.
The 20-year-old, who had a rollercoaster romance with Bieber which lasted about two years, is now setting her eyes on an older man, reported the Sun online.
"Selena is looking to date an older man this time. She finally realised how toxic it was to date a toddler like Justin," the source said.
"Selena is doing really well and feels like a weight has been lifted off her shoulders now that Justin is out of the picture."
"She finds Justin to be embarrassing since their break-up. He's turned into exactly the kind of person she'd never want to be with," the source added.
Earlier this week Bieber angered fans by turning up two hours late for a concert in London.
Since heading to the UK for his 'Believe' tour, Bieber has regularly made headlines for some of his demands and behaviour including wearing a gas mask on a shopping trip in the capital.