A photo of Niall Horan and Olly Murs comparing their chest hair has become an internet hit.

The One Direction singer posted the image yesterday (March 31) after he went to see the 'Army Of Two' man in concert at London's O2 Arena.

It saw the musical duo checking out each other's chest fuzz - something that Horan reckoned were similar. He tweeted:

"Went to see the one and only @ollyofficial at the O2 arena!great show! Also me and him have matching chest hair."

Olly Murs meanwhile later tweeted: "Mr Horan @NiallOfficial loving the new chest hair dude.. #niallsgrowingaloverug."

The revealing picture naturally captured the hearts and minds of Twitter, with the image being shared thousands upon thousands of times.