In 2019, she was the voice of Onica in '. In 2020, she starred in Showtime's series, ', playing multiple roles; she received praise for her work on the series, and she was nominated for an award at the upcoming Critics' Choice Super Awards. She will play Vivien Leigh in miniseries "Vivling". The series focuses on Leigh's classic films, including "Gone with the Wind" and "A Streetcar Named Desire"; Dormer will develop and produce the show. "Vivling" will be Dormer’s first series of a first-look production deal with Fremantle, a press-release announced in November 2018.