UPDATE: It looks like Instagram ... or RiRi herself ... removed the photos. Wonder why!
Rihanna isn't afraid to show a lot of skin!
The "Diamonds" singer poses completely topless in the latest issue of Lui magazine, wearing only a pair of pink bikini bottoms, nipple piercing and a hat.
RiRi took to Instagram to share two sexy snapshots from the cover shoot, writing, "lui. #COVER @mario_sorrenti_2."
In the racy pics, the brunette beauty shows off her toned tummy -- and lots of tattoos -- as she barely covers up her assets and looks seductively at the camera.
This isn't the first time that Rihanna has bared it all!
Back in February, the songstress flashed her nipples in a fishnet top -- with no bra -- at the Balmain fashion show after party in Paris.
Designer Jeremy Scott shared this risque photo on Instagram, writing, "MY GURLZ @themisshapes IN MY MADBALLS X JEREMY SCOTT FW14 & @badgalriri IN BARELY ANYTHING !"
What do you think of her revealing magazine cover? Tell toofab in the comment section below, and click "Launch Gallery" above to see Rihanna's sexiest TwitPics.