Popsugar Fashion Celebrity Fashion Best Fashion Moments on Red Carpet From British Celebs 2018 Over 100 of 2018's Best Red Carpet Moments From British Celebs 30 December 2018 by Morgane Le Caer View On One Page Photo 43 of 108 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 43 The singer wore a black slip dress when she attended the Serpentine Gallery Summer Party. Previous Next Start Slideshow Celebrity FashionBritish CelebritiesBest Of 2018Best OfRed Carpet