The X Factor winner Leona Lewis is desperate to meet her idol Celine Dion - and is confident it will be the highlight of her career. The singer is set to appear alongside Dion at the recording of British network ITV's television singing special Saturday Night Divas. She says, "Celine is someone I aspire to be like in every way. "Gosh - I can't wait. I'm in the middle of picking out dresses at the moment. Celine is definitely one of my heroes. She is amazing."