Forget peekaboo cutouts and thigh-high slits - celebs are all about showing some serious skin on the red carpet. Wearing outfits with expertly placed floral appliqués, lace in just the right place, or deciding to simply free the nipple has been going on for years. Take Rihanna, for example. The mom-to-be made a splash at the CFDA Fashion Awards in 2014 when she arrived in an Adam Selman sheer gown - sans a bra. The stunning number featured 216,00 Swarovski crystals. Naturally, she made headlines with her jaw-dropping look.