Super Junior Yesung congratulated new girl group, Red Velvet, on their debut.

On July 28, he posted on his twitter, "Red Velvet Seulgi and Yesung debut congrats," along with a photo.

SM Entertainment revealed their new rookie girl group, Red Velvet, today.

In the picture, Yesung and member Seulgi were seen posing for the camera.

On the other hand, Red Velvet, will release their digital single online next month.