PRADA’S HEART OF DARKNESS: A dark back alley in northeast London is the site of the capital’s latest hot club, a temporary venue dreamed up by Miuccia Prada and artist Carsten Höller. On Thursday evening, Fondazione Prada launched The Double Club, an installation-bar-restaurant space inspired by African Congo culture and Western design. Höller designed the venue, turning each room into a Congolese-Western European hybrid, with food and drink on hand from each culture. Even the bar was part beer shack, part sleek cocktail stand. Revelers including Höller, Prada, Coco Sumner, Jaime Winstone, Alexander McQueen and Katie Grand, who partied late into the night with the traditional Congolese band, took breaks to sample traditional goat meat kebabs. The project will function for six months.