This might be Rihanna's most NSFW video to date.
This video is certainly not for the faint of heart. HA!
The 28-year-old beauty was recently catching a few rays of sun and several liquid ounces of fun in Miami, when her friends talked her into putting on an impromptu twerking clinic!!
Ch-ch-check out the dance-tastic clip from her show (above)!!!
Whoa!! Talk about your butt waggle! That's impressive work!!
To see more of the sexpot in action, watch of Kendra on Top on Friday night on WEtv!