11/07/2013 20:12 BST | Updated 22/05/2015 10:12 BST

Is Justin Bieber The New Britney Spears? Inside The World Of The Most Adored Teenager Ever

What's going on with Justin Bieber? Ever since he turned 18, it seems like he's been taking notes from the Britney Spears' meltdown manual. After a string of bizarre episodes, Biebs infuriated crowds at London's O2 arena when he took to the stage almost two hours late.

The popstar didn't make it on until 10.10pm with many of his young fans having to leave without seeing their idol (it was a school night), while others were left stranded after missing the last train home.

justin bieber

Understandably furious parents told how they had called the venue ahead of the show and were told Justin would be on stage at 8.30pm and finished at 10.15pm. Tut tut.

Defending himself, Justin took to Twitter and apologised, blaming the delay on "technical issues" and claimed his start time was later than people were first told.

"Last night I was scheduled to go on stage at 9.35 not 8.30 but because of some technical issues I got on at 10.10. So I was 40 mins late to stage... There is no excuse for that and I apologize for anyone we upset. However it was great show."

justin bieber

But it doesn't end there, the Biebs weird antics continued when he was spotted on the Highway in Wapping, East London, jumping between cars.

"He was acting really peculiarly, car-hopping around a procession of black Bentleys, surrounded by motorbikes, all sporting Canadian flags while traffic was at a standstill. It was all a bit odd," one bemused driver apparently told The Mirror.

This weirdo behaviour is just the latest in a string of bizarre events which have apparently triggered fear among insiders that he's going off the rails.

"There have been mutterings behind closed doors that Justin's attitude needs to be seriously addressed," a music executive allegedly told the tabloid. "He is one of the planet's biggest stars and has been surrounded by 'yes' men for most of his teenage life.

"As a result, he seems to feel he can go around unchecked without fear of the consequences... He is still a massive earner for the company but this doesn't mean he can treat people with disregard."

Uh oh, we smell a Britney moment a'coming.

britney spears

Just like Britters, Justin was discovered when he was just 14-years-old and just as Britney went a little bit mad at the height of her fame, over the past year Bieber's been involved in quite a few unsavoury incidents. Just days ago he was spotted on the streets of London shirtless, with his boxers hanging out.

He'd been out celebrating his 19th birthday, but the party at nightclub Cirque Du Soir was cut short after just five minutes when staff smelt marijuana on his entourage and they were all kicked out. Then there was the gasmask-wearing moment - what was that about?

justin bieber gas mask

Oh, and let's not forget when he shouted at fans at Toronto airport last June, accusing them of being "in his face". Four months earlier he was also accused of giving the middle finger to a fan at Disneyland.

His famous peers haven't exactly spoken highly of him either. When he made a guest appearance on American telly drama CSI, his co-star Marg Helgenberger claimed the Biebs was a nightmare behind the scenes, revealing, "He was kind of a brat. He locked one of the producers in a closet and put his fist through a cake on the actors' table."

Jeez Louise Justin.