Oh My Girl (오마이걸) is a 6-member girl group formed by WM Entertainment, company of B1A4. The Oh My Girl members are Hyojung, Mimi, Yooa, Seunghee, Yubin and Arin. Oh My Girl debuted on April 21 2015 with 8 members: Hyojung, Jine, Mimi, Yooa, Seunghee, Jiho, Binnie and Arin.