Katy Perry Flaunts Thong and Back Tattoo in 2-Piece Dress at Billboard Women in Music [Photos]

Katy Perry put her backside on display at the Billboard Women in Music event on Wednesday, March 6, wearing a two-piece outfit with a skirt that laced up the back. It displayed a black string thong and part of Katy’s bare backside in cheeky photos.

The “Roar” singer, 39, smiled and posed as she also showed off a flesh-toned prosthetic butterfly tattoo on her lower back. Katy credited special effects makeup artist Hugo Villasenor in photos of her look posted to her Instagram page.

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Katy’s outfit from the front was just as sexy, as she bared part of her abs in the strapless red corset top with a slight peplum, while the sides of the thong were visible over her hips. The back of the top featured the same lace-up pattern as the skirt, as the American Idol judge was feeling herself!

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