Bieber is presently preparing to headline Coachella in April, a performance for which he will reportedly receive $10 million.

The singer, who was nominated for four Grammys, performed at the award show in nothing but sparkly lavender shorts and socks.

Keeping with the intimate vibe, Bieber wore little more than silky boxers and crew socks—a far cry from the oversized tux he sported earlier on the red carpet—as he strummed his electric guitar and lo...