Ariana Grande on all-time favourite artist: 'I'm obsessed with her'

Ariana Grande says Imogen Heap is her favourite artist of all time.

The singer told Jimmy Kimmel on Thursday (January 14) that she is "obsessed" with the songstress.

The US star added that she met her icon last year, but she didn't believe the invitation was real.

Grande said: "My all time favourite artist is Imogen Heap. I love her, I'm obsessed with her.

"She's incredible, she's a genius and I've loved her forever. There was an email that came in that was like, 'Hey, Imogen heard that Ariana has a concert in the UK and would like to have her over for dinner'.

"And I was like, 'Oh my god, this isn't real!'. And I was on my way to her house and it was a really long, long drive and eventually I thought I was being Catfished. I thought it wasn't going to happen.

"I was like, 'She doesn't want to have dinner with me, is this all a joke? I'm driving to my death right now, I'm going to be murdered'. And it ended up being her and it was a pleasant surprise!"

Grande admitted that she was "really shy" during her meeting with Heap.

Watch Imogen Heap in action below: