LONDON, ENGLAND - FEBRUARY 16: (L) Sienna Miller and Robert Pattinson pose at a photocall for 'The Lost City Of Z' at Corinthia London on February 16, 2017 in London, England. (Photo by Dave J Hogan/Getty Images)

LONDON, ENGLAND - FEBRUARY 16:  (L) Sienna Miller and Robert Pattinson pose at a photocall for 'The Lost City Of Z' at Corinthia London on February 16, 2017 in London, England.  (Photo by Dave J Hogan/Getty Images)