The cast of the popular West End musical Matilda hit the swings on the Albert Hall stage to perform a medley of "When I Grow Up" and "Naughty" at the U.K.'s Royal Variety Performance gala on December 2. Clad in gloomy school uniforms, the talented children sung about imagining life as an adult, while their teacher Miss Honey lamened about being a brave grown-up. Matilda will hit Broadway's Shubert Theatre beginning March 4, until then take a look at what the expect from the dazzling, Olivier-winning musical by clicking below!