Niall Horan posted this pic on Instagram, saying it was his 'I'm relaxed' face.

Who’s upsetting Niall Horan?

Westmeath pop star Niall Horan took to his twitter account to say that he was creeped out by people posing as his father Bobby.

Amid watching Keith Barry’s Brain Hacker series and the Stepbrothers film for the “350th time”, he also said: “My brother and Denise are the only ones with twitter so any of you pretending to be my parents! Stop ! It’s actually really freaky!”

The Mullingar man first started out by tweeting an account that used his dad’s name as its username: “can u stop pretending to be my dad! My dad can barely text never mind use twitter, it’s creepy and strange!”

But he was also keeping his 16 million plus followers happy by instagramming this image of his “relaxed” self!