PICS: Kate Middleton is a vision in white at London film premiere

Cape Town – Kate Middleton showed off her elegant style in London on Thursday night.

The Duchess of Cambridge walked the red carpet at the premiere of A Street Cat Named Bob, a film benefiting Action on Addiction.

Kate has been a proud supporter of the charitable organisation – which supports the recovery of people who struggle with addiction - since 2012.

With grace and poise the royal beauty stole the spotlight in a white gown with lace and pleated details made by Self Portrait.

See pics of Kate on the red carpet here:

Before watching the film the Kate mingled with stars of the film, including Bob the cat himself.

Here’s a video Kate petting the ginger cat:

(Photos: Greatstock/Splash, Getty Images)