Kim Chaehyun, a member of the group Kep1er, directly addressed the controversy over her ballet costume.

On the 2nd, a video titled "Princesses Stepping | ̊✧+⁎Kep1er Ballet Troupe⁎+˳✧༚" was released on the official Kep1er YouTube channel. The video showed Xiaoting, Choi Yujin, and Kim Chaehyun learning ballet together.

In the video, Kim Chaehyun wore a ballet outfit with a deeply cut upper body design, emphasizing exposure, unlike the other members. As scenes of exposure continued during stretching and ballet movements, some fans expressed concerns. Fans reacted with comments such as "The stylist must be crazy" and "Why dress her like that knowing she might be sexually harassed?" demanding the video be edited or deleted.

As the controversy spread, Kim Chaehyun stated through a fan communication platform, "I chose that outfit," adding, "Ballet has an image of pink, so I wanted to wear a pretty outfit." She continued, "I thought fans would like it, so I was surprised by the unexpected reaction." She also said, "I understand fans' worries, but I also have the desire to wear pretty clothes. I will coordinate better and dress appropriately in the future. Please don't be too angry."