We’re not sure the real reason for this next picture, so we’ll leave that one up to you!
Check out this snap which Rihanna tweeted from her Hawaiian beach vacation.
Though you can’t deny her rockin’ bod, we’re fairly certain she must have better workout gear than this skimpy white bikini.
See for yourself!
The “We Found Love” singer tweeted the above pic hard at work on the elliptical machine, with the caption: “Haha, come tap this @Khloekardashian!!!”