헬로 베이비 Saison 4

Hello Baby is a South Korean reality show where celebrities experience parenthood by raising children ages 5 and under. The main purpose is to see whether or not the celebrities make "good" parents.

To experience motherhood, Girls' Generation members were assigned to be mothers and take care of a 9-month-old baby boy named "Cho Kyung San." Periodically a different male guest would be the father, and they would select the "Best Mom" or "Worst Mom" of that particular day.