The couple got engaged during the summer last year and will marry near Nice in presence of only close family and friends.
"Most of their friends will fly out for the wedding on Friday. They’ve been planning it for a while but wanted something small and private. They could get married in total private in stunning surroundings," thesun.co.uk quoted a source as saying.
Knightley had recently said that she would like to have a small private wedding.
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