Apink is a popular South Korean girl group that has enjoyed tremendous success since it formed in 2011. The current six members of the group are Park Cho Rong, Yoon Bo Mi, Jung Eun Ji, Son Na Eun, Kim Nam Joo and Oh Ha Young. When the group first debuted in 2011, it started with seven members but Hong Yoo Kyung left the group in 2013 to focus on her studies.