The nine members were separated into two groups for their third EP release: Ta Ya, Hsiao Man, Ya Tou, Gui Gui, and Apple comprised Pink (traditional Chinese: 粉紅高壓電; ; pinyin: Fěn Hóng Gāo Yā Diàn; lit.

Ya Tou later confirmed in her Sina blog that Yeun Fei is no long a member of Hey Girl, but will continue to appear on the "Black Lollipop" show.

The newest member, Chi Ting (子庭), has not yet appeared on any of the Channel V related shows and many fans seemed baffled and upset about the departure of Yeun Fei.

Further speculations have suggested that the switch maybe due to Yeun Fei's high-profile relationship with one of the Didi "EDD", which the management frowns upon.

On May 5, 2011, the Hong Kong promotion company has unveiled the "new" Hey Girl member which included only Ya Tou, Hsiao Hsun, and Chi Ting.

Ta Ya, Ning Er, MeiMei & Apple had also decided to leave Hey Girl as they are now signed to Andy Ge's new agency company "A Legend Star Ltd".

Although it has been rumoured that Ya Tou and Hsiao Hsun will also leave after they have fulfilled their contracts to join A Legend Star, which never occurred.

Later, after the group's move to Warner Music Taiwan, its name was changed to 黑Girl, and the English name officially became Hey Girl.