On the June 16 airing of SBS Power FM 'Bae Sung Jae's 10', Yang Jung Won, who is also known for her 'gummy smile', appeared as the guest, and was asked, "Hyosung, and Sunhwa are called 'gum fairies'. Who do you think is better?" To this Yang Jung Won just chuckled. 

The issue arose as the talk came to a break, and music came on the radio. Yang Jung Won, who thought her mic was off, said, "I think Hyosung got cosmetic surgery. You can't see it (her gum) anymore." Bae Sung Jae asked, "What surgery?", and she explained, "Like a surgery on your gum. I saw her SNS lately, and its all down (gesturing with her hands to show how Hyosung's upper lip is covering her gum). People have been telling me to get surgery for it too." 

Another staff member questioned, "How do you get surgery on your gums?", and Yang Jung Won answered, "I heard you can rip the top to show more of your teeth." Right then Yang Jung Won finally noticed that her mic was still on. She quickly said, "Ah! Can people see this right now? Is my voice going out? Why didn't you tell me.."