NEW YORK, NY - SEPTEMBER 09: (L-R) Singer-songwriter Justin Bieber and model Laura Stone present onstage at Fashion Rocks 201
Theo Wargo/Getty Images for Three Lions Entertainment

There's no denying it: Justin Bieber loathes wearing T-shirts. The pop star has opted to take off his top, even if he's just walking through international airports or hanging out with his grandma. And now, the singer has taken his lack-of-clothing love to new heights at Fashion Rocks 2014.

To introduce performer Rita Ora, Bieber walked onstage at Brooklyn's Barclays Center in what looked like a fashionable combo of black slacks with a blue suit jacket paired with an edgy-but-hip black tank top underneath. We can't tell if it's a rehearsed or unplanned moment, but the 20-year-old quickly strips off his jacket, pants, shoes and tank to leave himself in nothing but his Calvin Klein boxer briefs in the quick minute-long appearance.

Yes, thousands of fangirls and boys began screaming when he the star hit the stage and even louder when clothes started coming off. But there was a remarkable amount of booing coming from the arena too—almost as loud as the screams. And who knew anything could be louder than a pack of screaming Beliebers?

The strip show was a rare media appearance for Bieber who's been laying low by recording an album with Cody Simpsontaking anger management classes and, according to his strong sixpack seen on Fashion Rocks, going hard at the gym. Watch the footage below.