01/19/2012 12:26 pm ET Updated Dec 06, 2017

Rihanna Poses In Bikini; Proves Girls Just Wanna Have Fun

Oh, it's just Rihanna, posing in a skimpy outfit for her Twitter fans again. The "We Found Love" singer found time while vacationing in Hawaii to post a series of photos that offer insight into her daily routine: posing outside in a white bikini; posing on an elliptical machine in a white bikini; and joshing around with her gal pal in a white bikini.

But that's not all. RiRi also manages to respond to Khloe Kardashian's suggestive Tweet -- "Shake your tits for this woman! LOL" -- with a succinct "Haaaa!!! Come tap this" before posting the running-on-an-elliptical-machine picture of herself again.

PHOTOS (Credit: Rihanna/Twitter):