Its website says that naked yoga "frees you from negative feelings about your body." If anything, it might be the opposite. Naked yoga would draw those who already feel ab fab in the first place, or those who work yoga into their cross-training sports regimes. Naked yoga would validate all those hours huffing and pumping in gyms. Clothes only hide muscle tone! Those who've suffered illness or injury don't just feel negative about their body image, they're trying to recover from traumas, fears and deep insecurities.
Their website goes on: naked yoga "allows for a deeper connection with yourself and the world around you." Why limit yourself to the world? How about the universe? How about: Yoga in Space! Without gravity, you'd be freed from negative feelings about your body, too. No sagging or drooping. Outer space might, just might, smooth out cellulite.
Yoga is a means to enrich our everyday lives, not an end in and of itself. Props and frills can be fun, but they don't make too much difference whether your inner self starts to awaken. The capacity for senses to become more acute, for old energy to clear, and the breath and body to truly relax can be done just as easily in blue jeans waiting for dinner to cook.