Director Andrew Rossi (Page One: Inside the New York Times) focuses on one of the hottest events on Manhattan’s social calendar—the annual fund-raiser for the Costume Institute of the Metropolitan Museum of Art—in this gorgeous, gossipy, yet penetrating documentary about the marriage of culture and commerce. The movie teems with celebrities, but the real stars are Andrew Bolton, curator of the Met’s blockbuster 2015 fashion exhibit “China: Through the Looking Glass,” who negotiates ground rules with the museum’s Asian arts curator and secures loans of Chinese-inspired Parisian couture, and Anna Wintour, editor of Vogue, who cochairs the gala opening, overseeing everything from the color palettes to the seating plan. Together they reassure Beijing that the show will not devolve into kitsch or Orientalism; keeping them to their word is celebrated filmmaker Wong Kar-wai, the exhibition’s watchful artistic director. In English and subtitled Mandarin.