The "Britain's Got Talent" panellist takes on the magical role for five weeks at the London Palladium from Friday, December 9, 2016 to Sunday, January 15, 2017, reported Digital Spy.
"I cannot wait to spread my Fairy Godmother dust over the festive season in this huge production at one of the most iconic theatres in the world," Amanda said.
"It's an absolute honour to have been asked. I'm very excited - but nothing like my two girls, who can't wait to watch their Mama fly!"
She joins an all-star cast, with Paul O'Grady as The Wicked Stepmother, Julian Clary as Dandini, Lee Mead as Prince Charming, Paul Zerdin as Buttons, Nigel Havers as Lord Chamberlain and Count Arthur Strong as Baron Hardup.
"Cinderella" is produced by Nick Thomas and Michael Harrison for Qdos Entertainment, directed by Michael Harrison and co-directed and choreographed by Andrew Wright.
It's designed by Ian Westbrook with costume designs for Paul O'Grady and Julian Clary by Hugh Durrant.
