...before the show ends 5/31? We already know Marina Abramovic does/gets naked in her art:
https://forum.oneclickchicks.com/showthread.php?p=553219 and the first picture here. In the original staging of Imponderabilia from 1977, she was one of the caryatids (second picture)(video of that apparently at youtube.com/watch?v=QgeF7tOks4s); in her current MoMA show, patrons enter as seen between people who aren't her but are nonetheless naked (I've compressed REALLY big pics/files; full size at hxxp://www.checkoutart.ca/global-art/marina-abramovic-performs-at-the-moma/). One caveat, though: too-passionate devotees of art have been ejected for, erm, groping...