She plays a French psychologist who caught Bond's eye in the previous film.
Daniel Craig sustained an ankle injury in Jamaica in May 2019 and had to undergo minor surgery.
Having joined the Bond franchise in Skyfall back in 2012, Fiennes is an accomplished British actor best-known for playing He's also played leading roles in historical drama The Reader and The Grand Budapest Hotel, and won critical acclaim and a slew of awards for his roles in 1993's Schindler's List and 1996 film The English Patient.