Keira Knightley

Keira Knightley (Born on March 26, 1985) is an English actress.

The Curse of the Black Pearl
In the first "Pirates of the Caribbean" Elizabeth Swann (played by Keira Knightley) is first seen briefly barefoot when she boarded on the Black Pearl and when she is seen on an island. Also, in a deleted scene she is still barefoot when she sees that she actually went around the island as prove upon seeing her footprints in the sand.

Dead Man's Chest
While disguise as a Cabin Boy, Elizabeth is seen wearing sandals that expose her feet and toes

Pirates of the Caribbean: At World's End
Near the end of the Movie, Elizabeth right boot is removed when she and Will are on an island together.