Ellie Goulding is writing songs with Niall Horan.

Ellie Goulding

Ellie Goulding

The 'On My Mind' hitmaker is close pals with the One Direction star and says there is nothing quite like working with a friend because her "best songs" are the ones produced with her mates.

On working with the 22-year-old pop heartthrob, she said: "He's a good friend of mine and it goes without saying that writing a song with someone you are friends with and someone you get on with, you can't really replace that with anything. I write the best songs with someone I feel truly comfortable with. So, definitely I think it will be a laugh."

And Niall is not the only male pop star Ellie is a fond of, the 'Love Me Like You Do' singer also revealed she is a big fan of Justin Bieber's new album 'Purpose' and respects him for reinventing himself after his past troubles.

She told The Daily Star newspaper: "I love it ['Purpose']. He's really excelled with this album.

"For me it 's really innovative new pop. It's different, It's just new and I salute him for that.

"I think it's a great thing to reinvent yourself and I know he went through some troubles. To come back with something as fresh as that, I think it's really cool."