Justin Bieber gave the audience at the Barclays Center in Brooklyn, New York an impromptu strip show during the Fashion Week event, stripping down to just his underwear while on stage.

After the Fashion Rocks event, Bieber took to his social media sites to explain what happened.

“Just stripped on national television hahahaha it wasn't planned lmao,” he wrote on Instagram.

image via Instagram from Justin Bieber

He also took to Twitter to post a Vine video of one of his fans freaking out while he stood there in his Calvin Klein underwear. He wrote, “Grandma always said kill 'em with kindness...and then strip on live national tv. Lol.”

video via Twitter from Justin Bieber

His co-presenter, Lara Stone, took to Twitter after the incident and wrote, “Thanks for that @justinbieber calvinklein @fashionrockstv #dope #nycalvins.”

According to ABC News, when Bieber got on stage next to Stone the audience didn’t take a liking to it, actually booing him. He seemed to have used the stripping strategy to get on their good side.

“I actually don’t feel comfortable unless I’m in my Calvin’s. So what’s up?” he said before taking off his clothes.

Bieber and Stone were on stage to introduce Rita Ora’s performance. Ryan Seacrest hosted the event.

image via INFphoto.com