Hollywood stars Jude Law and Keira Knightley hit London's red carpet

Hollywood stars Keira Knightley and Jude Law lit up the red carpet in London this evening at the world premiere of 'Anna Karenina'.

The actress, 27, plays the protagonist in writer Tom Stoppard's new adaptation of Leo Tolstoy's epic, Russian love story, while Jude, 39, plays her husband Alexei Karenin.

In the film, Knightley's character begins a passionate love affair with Count Vronsky, played by Aaron Taylor-Johnson.