Leona Lewis took center stage on ITV1 special ‘Royal Carols: Together at Christmas.’

The songbird took vocal flight with a spirited rendition of ‘O Holy Night,’ which was watched by Prince William and Kate Middleton, as well as millions watching at home.

Lewis’ performance follows the release of her ‘Christmas, With Love Always’ deluxe project and after a wave of promotion for her festive classic ‘One More Sleep.’

Watch after the jump…

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