Cate Blanchett & Benedict Cumberbatch Dress Up for Royal Dinner with Prince William!

Cate Blanchett is pure elegance in a one shoulder dress while arriving for a dinner to celebrate the work of The Royal Marsden hosted by the Duke of Cambridge Prince William held at Windsor Castle on Tuesday (May 13) in Windsor, England.

The 44-year-old Australian actress was joined by her The Hobbit co-star Benedict Cumberbatch, Helena Bonham-Carter, and Kate Moss.

PHOTOS: Check out the latest pics of Cate Blanchett

Last week, Benedict was spotted covering his face with a napkin while grabbing a bite to eat with Dakota Johnson.

FYI: Cate is wearing a Ralph Lauren dress and jewels!

10+ pictures inside of Cate Blanchett and Benedict Cumberbatch attending a royal dinner…