Kim Seonyou (김선유) is a South Korean singer. She is a member of the girl group CLASSy. She is best known for being a contestant on CAP-TEEN. On September 8, Jiyeon was featured in the trailer for the show My Teenage Girl, confirming her participation.
On September 21, 2020, Seonyou was announced as an upcoming contestant in the 2020 teen reality competition show CAP-TEEN. She did not pass the first performance evaluation and thus was eliminated.
She finished in second place in "My Teenage Girl" confirming her debut as a member of the final girl group CLASSy.
Seonyou debuted as a member of CLASSy on May 5, 2022 with the mini album Class Is Over.