By Shannon Carlin,

Nothing comes between Justin Bieber and his Calvins, except for maybe a booing crowd.

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Last night (Sept. 9) at Fashion Rocks, the music and fashion show that aired on CBS (’s parent company), Bieber hit the stage with model Lara Stone to introduce a performance from Rita Ora and the corresponding Calvin Klein fashion show.

According to Billboard and confirmed by clips that have surfaced online, from the moment Bieber hit the stage the crowd started booing, but that didn’t stop Bieber from stripping off his blazer, black top and pants. Eventually he was just standing on stage at the Barclays Center in a pair of boxers. Though, as he made clear, he is very comfortable in his Calvins.

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