Baby Boo (베이비부) was a girl group under Hyunda Company. Originally as four, they debuted on June 5, 2015 with their first digital single "Boo Boo Boo".
In May, the group's Instagram account confirmed the additions of two new members: Hajin and Jelly.
On February 26, Baby Boo made a comeback with their sixth digital single titled "Ring-Ring-Ring", Before the release it was confirmed that member Ji Eun left the group earlier that year.
In 2020, Shine, Ha One and Hyo Kyung confirmed they had all left Baby Boo, resulting in their unofficial disbandment. Shine is currently a member of the dance duo Happty under the name Bada.