Bieber is Just a party pooper; POP BRAT'S SWEARY POSING BACK FIRES AND BRINGS DOWN FEST'S VIBE.
Byline: 3am Edited by Ashleigh Rainbird with Hannah Hope and Halina watts
IT was never going to be a quiet weekend at Coachella once Justin Bieber rocked up. The pop brat, sporting a ponytail, caused havoc backstage when he squared up to a partygoer, screaming: "You wanna f*** with me?"
The 21-year-old singer was partying with pal Chris Brown at a Neon Carnival bash when a friendly exchange seemed to turn sour.
Bieber made a huge scene that disrupted the atmosphere at the late night dance party in California's Colorado Desert.
Onlookers described spoilt Bieb's behaviour as being "cringeworthy".
One tells us: "Bieber was initially mucking about, but he was screaming in the face of a much bigger guy, 'You wanna f*** with me? Do ya? Well, do ya? Come on then, f*** with me!' "At the start, it was clear he was joking - and he obviously knew the guy.
"But then it went on too long and it totally seemed to cross the line. Justin made a huge scene and everyone stopped what they were doing to look.
"What started as a joke quickly became too aggressive for anyone to know if it was playful or not.
"It really made for an awkward atmosphere at the place." And it should have been such fun, as the bash on Saturday, also attended by Leonardo DiCaprio and Breaking Bad star Aaron Paul, had its own bumper cars and a giant water slide - plus loads of carnival games.
This latest piece of brattish behaviour comes after Bieber's security cleared an entire room at a bash at dFm House on Friday so the singer could play piano to a few pals.
He had his own cabana curtained off from the rest of the fest, and security guards prevented fans taking photos of him.
Bieber spent a lot of the fest with pal Kendall Jenner and their mutual pal Gigi Hadid, as well as Hailey Baldwin and Shanina Shaik.