Your Song tells the stories of extraordinary people who are nominated by their friends and families to receive the performance of a lifetime from their favourite artist.
The artists that are taking part in Cowell’s new series include Rita Ora, Paloma Faith, Little Mix, The Script and James Arthur.
Of her new gig, Willis told ITV’s Lorriane: ‘Music means so much to people. Obviously, there are various reasons that made me want to do this show but the fact that it focuses on human interest stories is everything.
‘I mean, I love people, that’s why I do Big Brother and The Voice. This show brings people and music together so it’s just brilliant.’
But while Cowell may have picked the TV presenter as his leading lady for Your Song, Willis admits she’s never actually met him.
She said: ‘I couldn’t tell you what he’s like. I’ve not met him but I have been in the same room with him at the National Television Awards. Years ago when I first started out, I was on a red carpet and managed to grab one question with him, but that was it. And it was about 15 years ago!’
Fans can rest assured though that she isn’t leaving her hosting duties on The Voice UK behind as she promised she will still continue to present the singing competition.
And speaking of The Voice UK’s new hire Olly Murs – who was confirmed as Gavin Rossdale’s replacement earlier this week – Willis said is a ‘perfect’ addition to the show.
‘He is going to be fantastic,’ she said. ‘He is such a lovely bloke and will bring a brilliant energy. He knows the UK music industry inside and out so he will be perfect.’