The Met Gala has never banned nudity on the red carpet like the Cannes Film Festival . In fact, the more sheer and naked dresses ascend those iconic steps on the first Monday in May, the better. Decades before naked dressing became a trend in the eyes of It girls, guests of New York City's Metropolitan Museum of Art went sheer strictly for shock factor. No one expected Cher to make her Met Gala debut in a naked Bob Mackie dress. That's what made its few opaque feathers so special come Nov. 1974. (That's right, the month of May didn't always belong to the Met.) The ball's naked dresses have garnered a gasp-inducing reputation over the years. Similar reactions bounced off the walls at the 2015 Met Gala, when Beyoncé wore nothing but illusion mesh and Givenchy gemstones for the “China: Through the Looking Glass" theme. The Grammy winner's naked dress was a lone wolf that year. Six dress codes later, Zoë Kravitz, Olivia Rodrigo , and Kendall Jenner made 2021's Met Gala one of the sheerest on record.…