Lee Soo-jung

Lee Soo-jung
Crystal Yi
Also known asChai
Born1993 (age 30–31)
OriginChicago, United States
Genres
Occupations
  • Singer
  • songwriter
Years active2015–present
Labels
Korean name
Hangul
이수정
Hanja
Revised RomanizationI Su-jeong
McCune–ReischauerI Su-chŏng

Crystal Yi (born 1993), known by his stage name Chai or her Korean name Lee Soo-jung (이수정), is a Korean-American singer-songwriter. She is best known for winning SBS's K-pop Star 5.