Carter takes over the role in the show's forthcoming season three from Vanessa Kirby, who was recently nominated for outstanding actress in a drama series for her role of Margaret, which she reprised for the show's first two seasons.
from USATODAY – News Top Stories http://rssfeeds.usatoday.com/~/559269346/0/usatoday-newstopstories~aposThe-Crownapos-See-first-look-of-Helena-Bonham-Carter-as-the-new-Princess-Margaret/