Everyone will be asked to sing the chorus of the show's famous tune, Truly Scrumptious, at the auditions.
But there are some rules too. Kids must be:
Eight to 12-years-old
Under 4 ft 10 ins
Strong singing and movement skills
Boys should have unbroken voices
The 57 chosen children will make up three teams of 19, and will take it in turns to star in the musical.