According to some catholic sect popular in developing countries anything close to a bikini is pornography. But statues such as Louvre's Venus is plain art, and even a masterpiece.
Without noticing it, this people have drawn the difference between naked and nude.
Frances Borzello has published a book about this. I want it badly! By Christmas, the latest... Even though Jonathan Jones does not like it.
Jenny Saville, Shift (1996-1997)
Spencer Tunnick, Sydney Opera House (2010)