First up, her daytime outfit. The actress attended a celebration for her recent DuJour magazine cover in a Peter Pilotto mixed-print dress. Mint green pumps, Jamie Wolf studs, and a Joan Hornig ring finished the look.
Later, Nyong'o switched into a J. Mendel dress featuring an edgy leather bustier top and ladylike topcoat for an appearance on The Late Show With David Letterman. She accessorized with Graziela Gems Small Yellow Pizza earrings and Christian Louboutin Geotistrap sandals. Which trend do you like more on the Hollywood It Girl? Her signature brights or sassy darks? Vote and then sound off in the comments!