Which of the starlets pictured above said: "I work with a trainer," she said. "We work on the arms. I don't want manly, muscular arms. We work out my butt because I love my butt. [But] my legs are my main focus. I'm obsessed."
To find out who said it,
The answer is Rihanna! To read the full scoop on what Rihanna has been doing to tone-up lately, check out People.com.