One Correction: Harry Styles fixes fan's grammar during US concert

A One Direction fan expressed her delight after star Harry Styles signed her poster during a gig - and corrected the grammar while he was at it.

Vine footage posted from the band's concert in Philadelphia showed the pop singer asking for the sign to be brought over.

He is then seen scribbling on it with a marker, changing it from "harry YOUR so nice" to "harry YOU'RE so nice".

A delighted Taelor Ford tweeted following the gig: "Thank you so much @Harry_Styles for signing my poster and also correcting my grammar!!"

And after all the excitement, Ford told the BBC the poster now has pride of place on her bedroom wall.