User talk:Seitwelve

Lee Chae-yeon audition for Fantagio along with her sister Chaer-yeong but didn't pass, they also appeared at Kpop Star 3 together which made them a trainee at JYP Entertainment.

In 2016, Chae-yeon competed at SIXTEEN along with her sister again but got eliminated on the first round. She eventually left the company after the show and became a trainee at WM.

In 2018, Lee participated and placed twelfth in reality girl group survival show Produce 48 and became a member of Korean-Japanese idol group Iz*One that debuted in October that same year.