The 32-year-old star was rumoured to be taking a judging role on the US version of The X-Factor.
However, composer Andrew Lloyd Webber recently took her and boyfriend Lewis Hamilton out for dinner and said he wants her for his new musical reality show, a follow-up to last year's Over The Rainbow.
She said, 'We've been talking about doing some work together soon, on stage and on his new TV show. I would love it. Andrew is a friend. He and his wife Madeleine are lovely.
'I'm in awe of him and inspired by him. Coming up in the musical theatre, we have a lot in common.'
Speaking about the possibility of a role on The X-factor, she said to UK newspaper The Sun, 'I haven't heard about X-Factor. If Simon asked me, I'd do it, but no offer has been made official.
'I had some reservations initially because it sounds like such a big commitment. But it's a challenge I would be willing to take on.'