First Name: Ga Yoon
Family Name: Heo
Native name: 허가윤
Also Known as: Heo Ga-Yoon, Heo GaYoon
Nationality: South Korean
Gender: Female
Born: May 18, 1990
Heo Ga Yoon, better known by the mononym Gayoon, is a South Korean singer and actress. She is a former member of South Korean girl group, 4Minute, and its sub-unit 2Yoon.
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