On October 15, Seo In Young posted on her Twitter, "During the 'Music Core' rehearsal. I haven't been nervous in a long the~ Hope to see you all soon!" along with a photo.
In the photo, Seo In Young is wearing a colorful jacket and short shorts. She is also wearing unique looking printed leggings that show off her fashion style.
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Internet users commented, "She got even prettier" and "Her leggings are going to get so popular."