She found fame playing party-loving Princess Margaret – but Vanessa Kirby had to raise her game to compete with Hollywood royalty.
The Crown actress had to become fitter than ever to keep up with Tom Cruise, who is 26 years her senior, in the latest Mission: Impossible film.
Vanessa, 35, reprises her role as arms dealer the White Widow in Mission: Impossible – Dead Reckoning Part One, out this week.
