Lee Seo-yeon
AKA: SeoyeonBirthday: 2000-01-22
Birthplace: Seoul, South Korea
Home Page: https://www.pledis.co.kr/artist/detail/fromisnine/
Seo-yeon is a South Korean singer. She is active as a soloist under the stage name Yi Seoyeon (Y:SY). She is a former member of the girl group fromis_9.