A listener had complimented the singer, saying that she looks like she lost weight and became prettier.
When DJ Choi Hwa Jung asked her, "How much weight did you lose?" Yoo Sung Eun answered, "I lost 10 kg (~22.05 lbs). I've gained back 3~4kg again (6.6 lbs~8.8 lbs)."
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The other guests couldn't hide their shock at how much weight Yoo Sung Eun lost, musing at her lightning quick metabolism. Choi Hwa Jung joked, "Everybody's up in an uproar. It's because she's young."