SECRET members Jung Hana and Song Jieun showed off their 'serious faces'.

Today Song Jieun posted on her twitter, "Hana and I playing our 'serious face' game," along with a picture.

In the picture, the two are staring at each other with serious faces and trying to see who will laugh first.

Internet users commented, "They are having so much fun" and "They are both so beautiful."

On the other hand, SECRET has released their new album and will hold their comeback performance tomorrow.