Oh, Rihanna! She's up to her skin-showing tricks...again.

She had chilled on that for a minute and we thought she was over sharing racy and raunchy photos. Okay, maybe she is done flashing her Mary-Kate and Ashley (aka boobies) at every turn. But the usually topless 'Stay' singer posted a NSFW badonkadonk photo.

We can clearly see her shapely backside, barely covered by butt dental floss aka a thong, while wearing a pair of crotch-high, patent leather custom Prada boots.

She's all butt 'n' boots.

We all love a good pair of dominatrix boots, but these exceed expectations.

RiRi is extra sexafied in this pic. She doesn't show that pretty face of hers in this NSFW photo, but she doesn't need to. The boots draw and hold the eye.

She's as in love with those boots as she is with Chris Brown, as she posted the following caption and thank you note to Miuccia Prada: "Gotcha b---- tip toeing on my marble flo'!!! Sick as-- custom Prada boots! Miuccia you RULE!!! Thank you."

So not only is that fierce footwear dripping with sexiness, it was also made just for RiRi. That's one of the enviable perks of celebrity and pop stardom.

We bet Lady Gaga is biting her knuckles wishing Prada made those boots for her.

Watch the RIhanna 'Stay' Video