Keira Knightley is The Young Victoria

Keira Knightley comes out to support boyfriend Rupert Friend at the premiere of his latest movie, The Young Victoria, at Kensington Palace in London on Tuesday (March 3).

The 23-year-old British actress wore a white cocktail dress from Chanel 2009 Spring/Summer Haute Couture.

In the film, Rupert plays Belgian Prince Albert, the love interest and husband of Queen Victoria (Emily Blunt). The films opens in the UK tomorrow (March 6).

10+ pictures inside of Keira Knightley supporting The Young Victoria..