Girl group Rainbow's member Jisook showed off her sexy body.

Today, Jisook posted on her Twitter, "I worked out so I can go eat now, right?" along with a picture.

In the picture, Jisook is taking a picture of herself through the mirror. She was wearing workout clothes, showing off her thin waist under the jacket she's wearing.

Internet users who saw this commented, "She has such a nice body," "You worked hard so eat something delicious," and "Workout is the key to a perfect body."

Photo Credit: Jisook Twitter