Girls' Day Sojin shared a selfie that showed her beautiful looks.

On July 22, Sojin posted on her Instagram, "First filming of "Idol School.""

In the picture, Sojin is holding a bouquet of flowers and smiling at the camera. Her face beauty stood out more than the flowers.

In response, people said, "Sojin is so pretty", "I'm looking forward to Idol School", and "I love the song Darling! Daebak".

Girls' Day released their new song "Darling" after their first concert, 'Summer Party'.