Watch: Justin Bieber Gets Booed by the Crowd Before Stripping Down to His Calvins at Fashion Rocks [Photos + Video]

In what may be the most shameless of all shameless plugs, Justin Bieber stripped down to his Calvins during last night’s Fashion Rocks event after getting booed by the crowd.

That’s right — as soon as Bieber hit the stage the crowd began to audibly boo. We’re sure it wasn’t the reception he was hoping for.

While introducing Rita Ora with model Lara Stone, Justin exclaimed: “I actually don’t feel comfortable unless I’m in my Calvins,” before undressing.

Watch Justin strip down below!