Hwang Bo debuted in the entertainment industry in 1999 as a rapper for the South Korean band Bros. The following year, she joined the South Korean girl group Chakra. In March 2020, they dropped their debut studio album titled Come A Come. They went on to release three more albums before their disbandment in 2006. In 2007, Hwang Bo released her debut solo studio album Lady in Black, which featured 13 tracks.

Hwang Bo also ventured into acting and landed a role in the film Love Impossible in 2003. In 2008, she was paired with singer-actor Kim Hyun-joong in the first season of MBC’s We Got Married, which won them the Best Couple Award at the MBC Entertainment Awards. Also in 2008, she became a cast member of the MBC variety show Infinite Girls. In 2011, she appeared in the SBS sitcom Oh My God.

Hwang Bo also goes by the name Estella.