Taetiseo's member Taeyeon revealed a picture with their agency's junior group Red Velvet.

On September 20, Taeyeon posted on her Instagram, "Red Velvet members brought a red velvet cake to support us from early in the morning. Such grateful and cute kids. So beautiful! I want to dye my hair purple and become Red Velvet too" along with a picture.

In the picture, Red Velvet members and Taetiseo members are posing for the camera. All of their beauty caught much attention.

Internet users who saw this commented, "They must be close," "Such nice kids," and "They all shine so brightly."

Girls' Generation's unit group Taetiseo recently made their comeback with their 2nd mini album Holler.