Jason Derulo is ending the year with a bang! The 26-year-old singer sent social media into a frenzy after he uploaded a nude photo of himself on Instagram on Wednesday, captioning it simply, "#Naked coming soon." We're guessing he's referring to his upcoming single, which he has been busy promoting on his account all week long. Of course, Jason is no stranger to showing skin. He frequently posts snaps showing off his bulging biceps and rock-hard abs, à la Dwayne Johnson. Check out his latest post above, and then see who was the sexiest male celebrity of 2015!