Krystal boasted her young age to fellow f(x) member Victoria.

She posted a selca of herself with high pigtails and wrote, "Vic unni~ I didn't exist in the 80's." Playfully teasing that she is nearly 8 years younger than Victoria.

Even though the camera was right in her face, her skin was flawless, and her smile to the camera was playful.

Fans commented, "The hair doesn't seem to suit her..", "Her skin is so pretty. It must be because she's young?", and "Are you teasing Victoria because of her age?".

Source: Krystal's me2day