NIALL Horan has been left red-faced after an embarrassing tweet about the state of his derriere appeared online.
The 19-year-old star says his Twitter account was hacked after a message informed his followers that he has a large spot on his bottom.
"Have a massive spot on my arse," the tweet read. "Wondering should I squeeze it. What do ye think?"
The tweet caused amusement online. "Hubba hubba," DJ Nick Grimshaw wrote. "What a hunk!"
Other followers expressed their shock at the tweet. "Way too much information -- talk about over share!" one fan wrote.
The One Direction singer, who is currently in Japan, had been telling his fans about his Red Nose Day trip to Ghana.
"I've seen the slums right in front of me. This is no joke. They really do need your help. Poverty is real.
"Massive thanks to Red Nose Day for taking us to Ghana. It was incredible!"