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Rob Kardashian’s Ex Rosa Acosta Spotted on Sexy Vacation With French Montana!

French Montana is still keeping up with the Kardashians — and rumored to be dating Rob Kardashian's ex, IG model Rosa Acosta.

The rapper, who was previously linked to Khloé Kardashian, shared a photo from his Hawaiian getaway with a bikini-clad mystery woman and fans are convinced it's the voluptuous Love & Hip Hop star.

MORE: Khloé Kardashian's Nipples Make It Past the Instagram Censors in NSFW Photo!

Rosa, who appeared on KUWTK in 2011 as Rob's girlfriend, also posted pics on her Instagram from the tropical vacation, according to Media Takeout.

"I don't think you are ready," she captioned one of the sexy snaps wearing a sheer mesh dress in the lagoon-style pool.

Before jetting off with Rosa, French, 32, also sparked dating rumors with Rob's ex-fiancée, Blac Chyna, when the pair posed for photos on a private plane.

MORE: Blac Chyna is Crushing on Kanye West After Dumping Rob Kardashian!

However, Chyna revealed the pair were just friends, writing, "Bruva!,” which is slang for "brother," under the controversial pic.

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Fruta prohibida 🍑

A post shared by Rosa Acosta (@rosaacosta) on

Rosa, 32, recently opened up about her relationship with Rob, 29, and revealed her pregnancy scare on the reality show may have been scripted.

"Obviously, as you guys know, reality TV is not totally real, so he asked me as a friend to be on the show with him,” she told Radar Online. “And recreate a couple of things that may or many not have happened with other people.”

MORE: Kim Kardashian Shares New Vacation Pics on Website — Butt Looks Bigger than Ever!

So what else is there to know about the Dominican beauty?

Along with being a personal trainer and self-proclaimed "shower opera singer," Rosa has her own clothing line, CossaMia, and previously dated fellow L&HH star Nikki Mudarris.

She is also a professionally trained ballerina and was the youngest soloist member of Ballet Nacional Dominicana.

Get it, girl! For more of Rosa's hottest IG moments, click through the gallery below!