Zazou was a style statement from 1940 Paris, that kicked against all the austerity, and the German occupation, of WW2.
Greatly influenced by Cab Calloway and his Zoot Suit, The Zazous took everything one step further with Parisian black underground Jazz Clubs leading the way.
There are not a lot of photos available, but this one (below) gives an idea of the style. Great stuff guys.
Did I ever mention that I'm a huge fan of Zoot Suits? One like this would be just fine; I would wear it for weddings and funerals..