Knightley is Engaged!

Keira Knightley was sporting some extra bling on her left hand when she out in London last weekend.  The actress has become engaged her rocker boyfriend of a year, James Righton.

She was fashionable casual in her denim skirt and white t-shirt as she took a solo walk.

Knightley started dating Righton shortly after her split from longtime beau Rupert Friend, who she had dated since filming Pride and Prejudice in 2005.

EXCLUSIVE photos TILLEN DOVE