Watch: Harry Styles covers Ariana Grande’s 'Just A Little Bit Of Your Heart'.

King of Giving The People What They Want, Harry Styles, kicked off his first ever solo tour with covers of Ariana Grande’s 'Just A Little Bit Of Your Heart' (which he co-wrote), and One Direction’s 'Stockholm Syndrome’ and 'What Makes You Beautiful' included in the set-list.

Watch fan-filmed footage of the covers below...

+ approval from Ariana!