Yesterday, models, actors, socialites — and even a royal or two — dressed in extravagant, lush, floor-grazing gowns (or dapper suits with bow ties) to descend upon the David H. Koch Theater for the American Ballet Theatre's opening night gala. Whether the attendees decided to encase their bodies in lace, tulle, fur, peplum, sequins, or not at all (hello, cutouts) to view the world premiere of The Tempest, they all gave off an air of impeccably groomed luxury. Click through the slideshow to catch a glimpse from the evening — from Crystal Renn posing fiercely on a staircase in a fiery-red beaded gown to Sigourney Weaver sparkling in dark green. Also spotted: Hamish Bowles, James Lipton, Thom Browne, and more. They'll add a touch of glamour to your last-minute Halloween.