A surprise appearance made by Girls' Day at Gangnam Station nearly paralyzed the streets nearby.

On April 20th, an environmental campaign sponsored by Green Movement was held outdoors near M-stage. The group performed their hit songs "Twinkle Twinkle", "Hug Me Once", "Oh! My God", "Two of Us", and more, causing passerbys to stop in their track and enjoy the mini concert.

In a willingness to protect the environment, Girls' Day stated, "As we are still students, we use a lot of notebooks during class and for studying. Rather than using general notebooks, we try to use reusable paper. By doing so, we can recycle paper and even save a lot of trees."

Meanwhile, Girls' Day made a comeback on April 18th with their title track "Oh! My God" from their 2nd mini album, 'Everyday II'.

Check out the fancams below.







Source & Image: OSEN via Naver