"You’ll walk away from The Ugly Stepsister remembering how you hopefully managed to keep it down during the handful of not-for-the-squeamish sequences – especially the impressively vile climax – and less for Blichfeldt’s well-considered, sharp-eye formalist filmmaking. Imagine all the intricate costumes and lushly dressed sets of a period piece, but filtered through an icky mauve color palette – I think the official hue is “nausea” – and imbued with the fetishy sensibilities of David Cronenberg and giallo masters like Lucio Fulci and Dario Argento. It’s an impressive amalgamation of influences, shrewdly applying a fresh coat of bloody mucus to an overly familiar fairy tale." - John Serba, Decider