MAMAMOO's Moon Byul revealed she wasn't allowed to smile too hard!
On 'Immortal Song 2', she revealed that her label warned her against smiling too hard, especially not to make her cheeks rise too much.
MC Shin Dong Yup revealed, "I've heard of cases were the label banned dating or nighttime snacks, but this is the first time I've heard a ban on cheekbones.
"She said she was warned to be careful of her cheeks because her unique smile made her look unattractive on screen."
Moon Byul confessed, "It's because I laugh with my nose muscles," and showed the 'nose smile' on the spot, making herself laugh even harder.