Designer Stella McCartney opened her new global flagship store in London on Tuesday, and the guest list was seriously A-list. Idris Elba and his fiancée, Sabrina Dhowre, rubbed shoulders with Kate Moss, Kylie Minogue, and Mindy Kaling, who arrived in London fresh from her appearance at POPSUGAR Play/Ground over the weekend. The stylish gang mingled in the Bond Street store, nibbling on canapés served by a Gordon Ramsay lookalike (seriously!) before heading out to the balcony, where Kate, dressed in her signature color, did the honors cutting the ribbon. See all the pics from the stylish event now.