The birth of Joanne Koo

Joanne Hyejin Koo was born on August 21, 1990 in Los Angeles County, California.

Her father's last name is Koo, and her mother's maiden name is Oh. If Joanne is still alive, she's now years old.

Her potential siblings include Justin (born 1987), Benjamin (born 1986) and Joseph (born 1990).