The 23-year-old singer donned a tiny bejewelled bra, knickers and fishnet tights and paraded through the streets in celebration of Kadooment Day in her native Barbados on Monday (August 1).
The S&Msinger, who is known for baring the flesh, was snapped at Grand Kadooment Day sporting a revealing red bikini, traditional feathered head-dress and fishnet tights as she partied with revellers on the Caribbean island.
Rihanna reportedly blew kisses to the crowd from a carnival float and was later photographed sitting on top of a man's shoulders said Gigwise.
Kadooment Day marks the end of the month-long Crop Over festival, which takes place annually and features competitions and other activities.
Highlights include the crowning of the King and Queen of the crop - the male and female Barbadian who harvested the most sugarcane.
It would seem Rihanna got well and truly into the Carnival sprite as an onlooker at the annual festival told The Mirror:
"RiRi's the biggest star in Barbados. I certainly didn't expect to see someone that famous dancing with hardly any clothes on. She was loving it."
Rihanna's participation in Kadooment Day came during a break on her Loud world tour, which is due to call in the UK later this year.
See pictures of Rihanna enjoying Kadooment Day Here: Pictures