Hello Baby's first season premiered on June 23, 2009. With 9 members,Girls' Generationbecame mothers to a nine-month old boy named Cho Kyungsan.In the first episode, the members are given pointers about child care before they meet the baby. Each episode, guest fathers come on the show to help. At the end of the day, the dads pick 'best mom' who is given certain privileges and a 'worst mom' who is given some punishment, usually clean-up duties. They also occasionally play games and other activities. Girls' Generation's season was well-received, and its 5th episode ranked first among cable channels in its time slot.The show won 'Best Picture for Variety' at the 4th Korean Cable TV Awards in 2009.It ended with a total of 22 episodes on November 17, 2009.
The second season started on January 19, 2010, and it features the boy band,SHINee, who have to take care of a 4-year-old toddler named Jung Yoo-geun. Like its previous season, the members have to deal with daily problems with having a child, such as preparing his meals, calming him down when he cries and doing other activities such as playing with him or teaching him new words. Because the members are not always with the child, they frequently sent him videos when they are away. In the final episode, Yoo-geun is given a time capsule by his 'fathers' which he would open when he turns 21.The season ended on April 6, 2010, with 12 episodes and a special episode.
The third season, featuring girl groupT-ara, started on November 16, 2010. For several months, the group act as mothers to three young brothers namedMoon Mason, Moon Mavin and Moon Maden.