9Muses revealed their secret paper cup diet through their me2day on March 8.

The information revealed about their diet, Sara and Hye Mi's pictures was captured who were demonstrating the procedures for the paper cup diet. Sara and Hye Mi stated that they have been maintaining their figure with the paper cup diet for 5 whole months.

The paper cup diet is simpler than it sounds. They explained that you need to prepare 3 small paper cups. Place rice, side dishes and fruits in each cup. The cups serve as guidelines for how much food you should eat for one meal.

They added that brown rice is preferred over white rice and that oily foods need to be avoided. And the most important rule is that you need to eat all three meals a day!

Netizens who saw the diet plan responded with comments like, "No wonder they're called model idols", "How do they sing and perform with only that much food?", "Life of a singer is so hard" and etc.