Building on the play Only During a Carnival by Romanian playwright Ion Luca Caragiale, my thesis examines the difference between costumes designed for theatre and film. In order to analyse and design costumes, we need a deep understanding of the script, both as a whole and right down to its constituent parts. This is how designers are able to create a unified look. Costume is but one, albeit crucial component, of the rich visual world embodied by both genres. Analysing the costumes in both stage and screen adaptations using criteria that emerged during my study of relevant literature, we find a world of similarities and differences. The conclusion demonstrates that although costume design for stage and screen appear similar at first, there are some major differences that designers should keep in mind. Like the playwright, the directors of the stage and film adaptations, Silviu Purcărete and Lucian Pintilie, are also Romanian artists.