Francois Mori / Invision/AP 1 / 13
Francois Mori / Invision/AP 1 / 13

On any other person, Chanel's loose, long-sleeved, floor-length, ivory-hued shirt dress would have looked fashion forward, and yes, also a bit conservative. But on Rihanna, who wore the item to Chanel's fashion show on July 2 at Paris Fashion Week Haute-Couture, the dress became downright immodest.

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Credit the singer's unique styling: The 25-year-old star wore the semi-sheer gown, button-down garment open, nearly down to the belly button, to expose her cleavage. There were no signs of a bra, but some critics pointed out there were hints of a nipple ring.

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Just two buttons held the dress together at the navel so that her legs were nearly completely exposed. Prim two-toned pumps and a quilted handbag, both by Chanel, and strings of pearls offset the bordering-on-lewd ensemble. Her hair, worn in loose waves and dyed a pretty red, and natural-looking makeup completed the odd look.

"Went straight to the Chanel Couture show early this morning with NO SLEEP!!! It was so worth it!!!" Rihanna tweeted after the show.

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The night before, Rihanna wore a midriff-baring but more modest ensemble while out to dinner. Clad in a cropped black tank and tight pink skirt, the "Diamonds" singer had a starry run-in with Jennifer Lawrence! "Bumped into the extraordinary Jennifer Lawrence at dinner! #Paris" she tweeted, along with an Instagram shot of the two posing together.

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