In response to Ji Eun's birthday on May 5th, SECRET's Hyosung tweeted, "Celebrating the birth of Ssong choding [Ji Eun] >_< kekeke inside the car kekeke celebrating her birthday, a success >_< Our Ssong, Happy birthay >_< ^_^ kekeke"

"Performing at an outdoor park on Children's Day and Ji Eun's birthday...Watching these energetic teens, they are so pretty and cute >_< �I think it's true that I'm getting old ^_^ kekeke. �Please grow healthy, young ones," she continued shortly after.

Smiling bright with her spotless and healthy face, Hyosung looks as bright and youthful as ever.

Followers commented, "Ah! I forgot today is Children's Day. You look so cute like a child yourself", "Happy Birthday to Ji Eun unni!", and "I hope you guys had a fun time."

Source + Photos: SECRET Hyosung's Twitter