EXCLUSIVE: Rebecca Ferguson is set to join the cast of Stephen Frears’ Florence Foster Jenkins opposite Meryl Streep, Hugh Grant and The Big Bang Theory‘s Simon Helberg. The Pathe-financed pic follows the true story of the titular character (Streep), a wealthy woman in the early 2oth century NYC high society who used her relationships and her fortune to gain traction as a singer. With one catch: She couldn’t actually sing. Grant plays her butler and best friend, while Ferguson will play Grant’s long-suffering wife.

Earlier this week, Deadline exclusively revealed that Helberg would be boarding in the role of Cosme McMoon, Florence’s accompanist on the piano.

Ferguson is enjoying a roller-coaster year. Having scored the female lead opposite Tom Cruise in Mission: Impossible – Rogue Nation, she now moves straight into a prestige project opposite another screen icon in Streep. Ferguson also has Cold War drama Despite The Falling Snow opposite Charles Dance.

She is repped by Tavistock Wood Management in the UK and Actors in Scandinavia in Sweden.