Kammala jumla mai zuwa: A cikin 2020, Mulligan ya fito a cikin fim ɗin Emerald Fennell mai ban dariya mai ban sha'awa "Matar Matashi Mai Alkawari", tare da Bo Burnham da Alison Brie. Ta kuma yi aiki a matsayin mai gabatar da fim a fim din, wanda ya fara a bikin Fim din Sundance na shekarar 2020 zuwa babban yabo. Shafin yanar gizo na Rotten Tomatoes ya lissafa darajar fim din a matsayin 90%, tare da ra'ayoyin masu sukar ra'ayi, "Wani mai tayar da hankali, mai tayar da hankali, "Promising Young Woman" shine farkon aikin da ya dace da marubucin-darektan Emerald Fennell <unk> da kuma aikin da ya dace da Carey Mulligan. " Saboda annobar COVID-19 an jinkirta sakin fim ɗin zuwa 25 ga Disamba 2020. Domin rawar da ta taka, ta sami lambar yabo ta biyu
Nomination na Kyautar Kwalejin Kwalejin don Mafi kyawun 'Yar wasan kwaikwayo kuma ta lashe Kyautar Zaɓin Fim na Masu sukar don Mafi kyawun' Yar wasan kwaikwayo a tsakanin sauran girmamawa. Bayan lashe Kyautar Mata mafi kyau a Kyautar Kyauta ta 36th, Mulligan ta sadaukar da kyautar ta ga marigayi Helen McCrory.