Justin Bieber gets booed by the crowd... then strips down to his Calvins to reveal his six pack on Fashion Rocks

 It wasn't the reception Justin Bieber must have been hoping for.
But after being booed by the crowd, the 20-year-old stripped to his underwear for a segment on the star-studded Fashion Rocks show in New York on Tuesday.
The Baby singer first appeared onstage in a powder blue coat, black tank-top and dark jeans as he teamed up with model Lara Stone, 30, to introduce singer Rita Ora.

 'I don't feel comfortable unless I'm in my Calvins. So, what's up? Is that cool?,' he asked Lara.
Without waiting for an answer Justin then took off his coat and jeans.

 'Somewhat. Thank you, Justin,' Lara responded.
The Boyfriend singer then pulled off his black tank-top and was left wearing only Calvin Klein black boxer briefs with a red waistband.
Justin slightly muffed his introduction of 23-year-old British singer Rita as he struck model poses in his underwear.

 Fashion Rocks returned after a six-year hiatus and was held at the Barclays Center in Brooklyn during New York Fashion Week.
The show brought the worlds of fashion and music together and included performances by Rita along with Jennifer Lopez, Nicki Minaj, Usher, Pitbull, Miranda Lambert and others.
Ryan Seacrest hosted the event that was aired as a special on CBS.

 Later the hit maker was seen with his tank top on as he stepped outside Barclay Center.
Carrying only his cell phone and with the same jeans on that he wore for the show, the Canadian looked under dressed for a night out in Manhattan,
He didn't appear to be in the best spirits either, but that is understandable as he was booed at the event.