 Members Jisun and Jiin officially left the group in 2010, while Jihae left in late 2012.In order of release, the group's biggest hits include "Twinkle Twinkle", "Hug Me Once", "Expect", "Something", "Darling", and "Ring My Bell", all of which have sold more than one million digital copies each.Over the span of their career, Girl's Day has endorsed over 20 brands, including LG Electronics, Ezaki Glico's Pocky, Lotte World, Nexon and Bullsone.