Singer Lee Hyori's kill-heels are becoming an issue.

In SBS 'You and I' aired on May 20, MC Jung Jae Hyung said "I brought a ruler. I'm going to check", and measured the heels of Hyori's shoes.

The heels that Hyori wore that day were approximately 20cm, and Jung Jae Hyung said "That's almost the height of a stair."

Lee Hyori, laughing, said "Aren't guys that measure girls' heels unattractive?", and Jung Jae Young yelled, "Hey!" bringing laughter to the audience.