The Ugly Stepsister (Norwegian: Den stygge stesøsteren) is a 2025 body horror film co-written and directed by Emilie Blichfeldt in her directorial debut. The film, starring Lea Myren, Thea Sofie Loch Næss, Ane Dahl Torp, and Flo Fagerli, making use of the motif of the fairy tale "Cinderella", retells a twisted story of Elvira who competes against her beautiful stepsister in a bloody battle for beauty. It premiered at the 2025 Sundance Film Festival on 23 January 2025, where it opened the Midnight Section.

An International co-production from Norway, Poland, Sweden, and Denmark it was showcased as part of the Panorama at the 75th Berlin International Film Festival on 16 February 2025, after its premiere at Sundance. The film was released in Norwegian theaters on 7 March 2025 by Scanbox Entertainment. It would also be released in the United States on April 18, 2025.