coup de main - noun
kü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Watch: HAIM on Vogue's '7 days, 7 looks'.

The style sisters, Este, Danielle, and Alana Haim have teamed up with Vogue for a new video in their '7 days, 7 looks' series. The sisters show off every outfit they wear in a week and model everything from their dream editorial look to their ideal airport outfits.  

Watch the full video below...