Lia (리아) (Real name is Choi Ji-su (최지수)) is a South Korean singer under JYP Entertainment. She is the main vocalist of the girl group ITZY. Her English name is Julia.
Ah! I love this spelling so much more than Leah. Could be used as a nickname for Cordelia, Amelia, Cornelia, Eulalia, many other -Lia names... But it could be used as a full name by itself too.