The racy snap might look familiar to die-hard fans at it was taken on the set of her 2013 pop hit Come & Get in Trouble With Me.
The 32-year-old captioned it: "Throwback to that time I dipped myself in gold paint then rode around nude on a horse... ✊🏼✊🏼✊🏼."
Fans were quick to comment on the sexy picture which is vastly different to the more modest pictures found on her Instagram feed.
"Seriously one of the hottest clips ever! bom chicka wah wah," one wrote.
While another commented: "You still look as good as the day you did that shoot keep up the good work girl ♥♥♥♥♥."
We think so too!
Check out the clip for Ricki's track below for nostalgic reasons, obviously.