It has been recently studied in two distinct settings: (1) <cite>Rao and Tetreault (2018)</cite> addressed the task of Formality Transfer (FT) where given an informal sentence in English, systems are asked to output a formal equivalent, or vice-versa; (2) introduced the task of FormalitySensitive Machine Translation (FSMT), where given a sentence in French and a desired formality level (approximating the intended audience of the translation), systems are asked to produce an English translation of the desired formality level.