Rihanna took to her Instagram to post photos of her modeling her River Island collection in Greece recently. The "Pour It Up" singer and "Styled to Rock" creator posed in a bikini and showed off her toned body. 

According to the Daily MailChris Brown's ex-girlfriend, 25, was feeling very flexible while twerking and hanging upside down during one sexy snapshot. The performer had her butt up in the air, dressed in a black two-piece swimsuit and cosy moccasin boots.

[For the photos, click HERE.]

Katy Perry and Cara Delevingne's friend also posed in the same skimpy bikini with a pink flower hanging from her mouth, and a rolled-up cigarette in her hand. She stared at the camera very seductively.

"She smokin rebel flowers in Greece!!!," Rihanna wrote as the caption for the cigarette photo.

In other images, RiR lies poolside while doing some sexy poses. One snap shows the controversial "bad girl" having twisted her body into a weird shape.

It looks like the starlet was not only working, but enjoying some me time in the ancient city. Though she is still traveling and performing on her Diamonds World Tour, RiRi took some time to enjoy the sights.

Her new reality TV show, "Styled to Rock" is premiering Friday at 8 p.m. on Bravo.

Tuning it to RiRi's competition show? Like her latest photos? Let us know in the comments section below!