CollaborationsLupita Nyong o for Lancôme: Why the Actress Is the Best Thing to Happen to Beauty this YearDerek Lam Does Balanchine: The Designer’s New Jewelry Collaboration with Former NYCB Ballerina Jamie WolfPamela Love and Selima Optique Launch A Joan Didion Inspired CollaborationThe Year Adidas PoppedA Celebration for Arden Wohl s Shoe Collaboration with Cri de CoeurSantigold s New Limited Edition Makeup Collaboration for SmashboxA Mulberry Dinner at Claridge’s to Celebrate Cara Delevingne’s CollaborationLangley Fox on Her Multiple Fashion Week Collaborations and What She Has in Common with Her Great-Grandfather, Ernest HemingwayPeter Pilotto Launches Its Collaboration with TargetRaf Simons Opens His Atelier—and Shares His Label—to Artist Sterling Ruby for the Most Complete Designer/Artist Collaboration YetIn the Bag: Victoria Beckham s Collaboration with Mytheresa.comSweetest Thing: FEED Holiday Party with Karlie s Kookies—and a RecipeVersace on the Hudson