Justin Bieber's 19th birthday the 'worst'

Los Angeles - Justin Bieber has slammed his 19th birthday celebrations as being the "worst birthday."

The Beauty And A Beat singer - who turned 19 on 1 March - had reportedly forked out £10 000 for a circus-themed bash in London and invited 20 friends to join him in the capital but the party had to be cut short after the star's entourage clashed with security staff at the Cirque du Soir club, according to E!News.

He had been looking forward to a night out with Will Smith's son Jaden and Ella-Paige Roberts Clarke - who is rumoured to be his latest girlfriend.

He had tweeted before hand saying: "Gonna be fun tonight. Thanks to everyone for all the birthday wishes. 19!"

However he later posted: "Worst birthday."

The Canadian star was only in the popular night club for a few minutes before they left and they were later seen heading off to McDonald's before returning to posh hotel, The Langham, where he is staying during his time in the UK.

The singer's birthday was further ruined after he discovered his friend Lil Twist was pulled over by police while being behind the wheel of his Fisker Karma.

TMZ reported the rapper had been stopped after making an unsafe lane change in the expensive sports car which costs over £100 000.