On March 8th, 4Minute's Sohyun updated her Twitter,"My hair is pink yahab! What are you doing today? kkkk" and uploaded a long a new photo.

The photo turned out to be a collage of 4 selcas, Sohyun was looking at the camera and doing various cute expressions. Especially her new pink hair color emphasized on her white skin and made her look like a doll.

Meanwhile, 4Minute will make their comeback on March 17th with title track "What are you doing today?"