It's the first Monday in May, which means celebrities and fashionistas alike will flock to the Metropolitan Museum for Anna Wintour's resplendent gala, which boasts a high-tech theme this year alongside its high-fashion. The gala's theme, "Manus x Machina: Fashion in an Age of Technology," celebrates the individuality of haute couture with the forward-thinking nature of ready-to-wear pieces. Fittingly, the gala is sponsored by Apple, with Apple's Chief Design Officer Johnny Ive and Taylor Swift as co-chairs. See what all the celebrities wore on fashion's biggest night.