This week the Toronto International Film Festival released the guest list for September's ten-day event, and the 49-year-old's name is on it, joining fellow invitees including George Clooney and Demi Moore.
Sarah's attendance is in honour of the festival's closing film, The Young Victoria, which she produced and which features her elder daughter Princess Beatrice, who won't be attending.
This year's Canadian film event boasts such a glittering guest list it's as if almost all of Hollywood is to uproot and move to Toronto for the week.
Matt Damon, Keanu Reeves, Ewan McGregor, Colin Firth, Colin Farrell, Clive Owen, Nicolas Cage, Edward Norton and Michael Douglas are all among those joining George in the male contingent.
The ladies include Emily Blunt, Tilda Swinton, Naomi Watts, Julianne Moore, Drew Barrymore, Penelope Cruz, Jennifer Garner and Ellen Page.
This year's festival will take place from September 10 until 19 and will screen more than 300 films from 64 countries. It will open with a UK biopic about Charles Darwin called Creation, starring Paul Bettany and his wife Jennifer Connelly.