Rainbow Woori's cute rebellion made fans laugh.

Woori posted a photo on her twitter on Jan. 27 with a comment saying "I will be bad".

In the photo, Woori had her hair on sides, making funny face, looking at a camera. Flawless facial skin and big eyes caught attention.

Netizens commented "Cute rebellion", "Please don't. I like you better when you smile!".

Photo: Woori twitter