Not much is available about her character Estelle at this point other than her casting which was announced via the official Facebook page of the movie.
Sigman's previous credits include 'Miss Bala' and 'Pioneer'.
Director Sam Mendes is returning as the director for the second time after 'Skyfall' while it is Daniel Craig's fourth outing as the fictional spy.
Ben Whishaw, Naomie Harris and Ralph Fiennes are also returning.
"What you have is a movie entirely driven by Bond. He is on a mission from the very beginning. It's about whether or not to pursue the life he's always pursued, whether he matters and is he going to continue or not," Mendes had said in a recent behind-the-scene video.