Mimî Michelle Ndiweni (born 31 August 1991), since 2021 credited as Mimî M. Khayisa, is a British actress. She is best known for playing the Nilfgaardian sorceress Fringilla Vigo in Netflix's The Witcher, Tilly Brockless in the television series Mr Selfridge and Ester/Jekasai in the stage production of The Convert at The Gate Theatre in London.

Filmography