“Life must be lived in the pink at all times,” the ebullient Jean Paul Gaultier once told Vogue. Guests attending “Camp: Notes on Fashion” at the Metropolitan Museum of Art’s 2019 Met Gala seemed to be on the same wavelength, taking to the red carpet in a spectrum of hues ranging from shocking (Lady Gaga, RuPaul) to blush (Hailey Bieber). It turns out that pink, the color of romance and roses, Champagne and cotton candy, is the campiest of colors. What else but a penchant for pink could link Louis XVI and Barbie? In the 18th century, pink communicated status. Once the “pink is for girls, blue is for boys” idea was solidified in the early 20th century, the color became sartorially transgressive when worn by men. Happily, these days, as gender lines have become blurred, anyone can be tickled pink. Here’s how la vie en rose was lived at the 2019 Met Gala.