Rosa Acosta knows how to do it for the 'Gram.

The sexy vixen often hosts her own self modeling sessions, flaunting her natural bust and dedicated workout regimen for his many Instagram followers' enjoyment.  Recently, she posted a photo of herself sitting poolside with her back to the camera while wearing a very seductive bikini bottom and nothing else.  The interesting design of the bikini made the picture even more tempting, as it featured numerous multicolored strings that put most of her cheeks on full display.  Rosa also snapped numerous workout photos and even a few pictures from an aerial yoga project she is working on as well.

Check out the sexy Rosa Acosta in all of her fit and juicy glory above.