media_removed_toofab 102011
Keira Knightley's
man put a ring on it -- and now we're getting our first glimpse at the sparkler!

Keira and fiance James Righton were spotted over the holiday weekend in London, where the "Pirates of the Caribbean" star proudly displayed her engagement ring.

The two held hands and even kissed for the cameras while shopping around town, looking like a very happy couple.

Keira and the Klaxons keyboardist started dating early last year.

While her publicist confirmed the two will tie the knot, no other details about where or when were made available.

See how Keira's ring stacks up against other celeb engagement rings in the gallery above!