She may be on vacation, but that hasn't stopped Rihanna from working on her fitness!
The 23-year-old "You Da One" singer has been soaking up the sun in Hawaii since Saturday, where she's been spotted paddle boarding and swimming with the sharks. The bikini-clad star hit the gym on Wednesday, sharing a photo of herself exercising on the elliptical via Twitter.
"We focus on the core muscles," trainer Ary Nunez recently told Us of the martial arts- and dance-based workouts she does with the 5-foot-8 star. "And we do a lot of repetitions."
- Chris Brown