Dior may be losing Raf Simons, but it can still throw a great party. Case in point: Last night’s Guggenheim International Gala, where Grimes performed in the middle of the museum while guests watched from its white spiral, bathed in James Turrell–style pink, blue, and purple light. Among the crowd was Simons himself, plus A$AP Rocky, Kiernan Shipka, Eva Chen, and Hanne Gaby Odiele. Click through the slideshow to see photos of Grimes getting into the groove on an altarlike stage, plus plenty of beautiful people in Dior.