Red Velvet Seulgi - Apink Naeun
They went to the same high school (School of Performing Arts Seoul)
1994.02.10
Girls Day Hyeri - Laboum ZN
1994.06.09
AOA Seolhyun - Blackpink Jisoo
1995.01.03
Weki Meki Doyeon - Gugudan Mina
(Both were in I.O.I together)
1999.12.04
