Cinderella (1950 film) overhears Cinderella humming the waltz played at the ball. Realizing that Cinderella is the mysterious girl, Lady Tremaine locks her in her attic bedroom. Later, the Duke arrives at the château, and Jaq and Gus steal the key from Lady Tremaine's dress pocket and take it up to the attic as Anastasia and Drizella unsuccessfully try on the slipper. Lady Tremaine's cat, Lucifer, ambushes the mice, but Bruno chases him out of the house, allowing the mice to free Cinderella. As the Duke is about to leave, Cinderella appears and asks to try on the slipper. Knowing it will fit,
Cinderella (2015 Disney film) on February 13, 2015, at the 65th Berlin International Film Festival, and was released on March 13, 2015. Theatrically, it was accompanied by Walt Disney Animation Studios' short film "Frozen Fever", featuring the characters from "Frozen". On February 10, 2015, IMAX Corporation and Disney announced plans to digitally re-master the film into the IMAX format and release it in IMAX theaters globally on the scheduled release date. The first official presentation of the film occurred at Disney's three-day D23 Expo in August 2013. The film was previewed at CinemaCon in Las Vegas, Nevada, in March 2014, with a teaser showing