Queen Elizabeth is Looking to Party in the Trailer for 'A Royal Night Out'

What happens when members of the royal family sneak out for a wild night on the town to celebrate V.E. Day? Anything and everything, and that's what's in store for Princess Margaret and future queen Elizabeth in A Royal Night Out, which has just debuted a new trailer.

Starring Sarah Gadon as Elizabeth and The Diary of a Teenage Girl breakout Bel Powley as Margaret, the film finds the teenagers escaping the castle to celebrate with all of London, finding love and laughter in the process. Jack Reynor, Emily Watson, and Rupert Everett co-star. Here's the official synopsis:

The beautiful Sarah Gadon and Bel Powley, star as our Princess' in 'A Royal Night Out'. IT's V-E Day, 1945, people are celebrating the end of the war. London overflows with celebration and excess. Two teenage princesses Margaret (Bel Powley) and the future Queen of England, Elizabeth (Sarah Gadon) are allowed out that night to join the party. For the first time, they are able to mingle with the teeming crowds, incognito...

Directed by Julian Jarrold (Brideshead Revisited), A Royal Night Out opens December 4th.