Justin Timberlake is currently on the road with his Man of the Woods tour… where the "wood" part of his show was clearly seen in a pair of black sweats he was wearing.
Someone snapped a photo of him on stage, where the imprint is pretty much impossible to miss. Kudos to whoever took this shot. Link here.
His former costar Patricia Clarkson has talked about the alleged size of his member in the past, where she admitted to him being "gifted below the waist". Based on that photo someone took at his concert, we would have to agree with that as well.