Rihanna Parties With Lewis Hamilton in Scantily-Clad Costume at Barbados' Crop Over Celebration

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The 27-year-old singer was having a great time with Nicole Scherzinger's ex.

Rihanna was once again back in Barbados for the annual Crop Over festivities, and this time, she had a famous friend in her squad.

The 27-year-old singer
was spotted partying and dancing with Nicole Scherzinger's ex-fiance, Lewis Hamilton, at the Crop Over's Kadooment Day Parade. The 30-year-old shirtless British race car driver celebrated wearing a backwards hat, trendy sunglasses and a colorful bandanna around his neck. Both his Calvin Klein underwear and his rock-hard abs were in full view.

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The hat was apparently covering up his new 'do. "Barbados, we ready!! #Islandlife #Carnival2015," Hamilton captioned a selfie of his hair.

While recent pics of Rihanna and Hamilton partying are sparking romance rumors, the two known each other for a few years. In Dec. 2014, the two posed together at the British Fashion Awards in London, and in 2011, they were also photographed at the Canadian Grand Prix.

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While Hamilton was a nice addition to the party, all eyes were on Rihanna and her show-stopping costume on Monday. Like those Crop Over styles from years past, the intricately beaded getup included a barely-there bra and booty-baring bikini bottoms. Rihanna paired her sexy style with a huge headdress and giant wings.

The outlandish pop star knew she looked good because she couldn't stop Instagramming during the festivities on Monday.

She even posted a video of her booty shaking that's nearly NSFW.

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One thing's for sure, RiRi knows how to party and so does her best gal pal Jennifer Rosales, who was also in attendance.

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Hamilton is one lucky guy to be partying with these gals! Squad goals, indeed.