Itâll be all WHITE on the night…..Hundreds of party goers dressed head to toe in white come together for the first âDiner en Blancâ to be held in London, September 20 2012. See SWNS story SWWHITE; The all-white affair includes white food, fireworks, flowers and ever white musicians. The flash feast has its roots in 1980s Paris, when François Pasquier returned to the city after a few years abroad and held a dinner party to reconnect with friends. So many wanted to come that he asked them to convene at the Bois de Boulogne and to dress in white, so they could find each other.