Britney Spears stripped down for her latest Instagram post. The "Toxic" singer, 43, posed with her back turned to the camera, wearing thigh-high black boots and a "rose" emoji over her bottom in a nearly naked photo on Saturday, August 23. Spears restricted any comments on the Instagram post, though her latest racy photo is sure to generate discussion. Spears tends to use her social media for most of her communication with the public these days.