Actress Keira Knightley in the final (2011) commercial for Chanel Coco Mademoiselle. A little over 3 minutes long.
If you missed it, see Teaser 1 or Teaser 2, or listen to Keira Knightley talk about the fragrance.
Update: the music is Joss Stone doing a cover of James Brown's Man's World. Some of you may remember that the first Keira Knightley / Coco Mademoiselle commercial also used a Joss Stone song.