Girl group Brown Eyed Girls' member Gain gave the surprising news of her comeback.

On Feb. 9, Gain posted on her Instagram, "It's a secret what color my hair is. Changed the picture to black and white. Finally album jacket filming yahoo," along with a picture.

In the picture, Gain has messy hair and is looking at the camera with a sad face. She's wearing a sparkly top and is bringing curiosity to the viewers what color her hair is.

Internet users who saw this commented, "Gain keeps getting prettier", "I wonder what color it is" and "I can't wait till your comeback."