rihanna bikini cross trainer*We have to give RiRi her props.

She knows how to get and keep the spotlight on her.

The Daily Mail is reporting that the party girl is in Hawaii for some fun and sun and took a minute to Tweet a photo of herself on a cross trainer in a teeny bikini.

Most people dress down when they hit the gym, wearing loose tracksuit bottoms and T-shirt to be the most comfortable while exercising, but not miss thing. Nope, that’s not her style.

The 23-year-old singer teamed the triangle two-piece with a pair of huge sunglasses, and tweeted the shot with the caption: “Haha, come tap this @Khloekardashian!!!

Read and see MORE snaps at the Daily Mail.