Just in case this famous crooner ever forgot his first love, the music man got a tattoo of a microphone on his arm. Do you think you can identify the singer with this tat?

The dude with this mic tat is actually 1/5 of a boy band that is currently blowing up the charts as the U.K.'s hottest export. The singer, whose smoldering good looks add to his appeal, might look a bit young for a tattoo of such a large magnitude, but we can assure you he's old enough. Heck, he even dropped thousands on a jet-black Bentley recently -- if that doesn't say "adult," we don't know what does.

Do you know who has this microphone inked on their arm? Click through to find out!