Group name: CHI CHI (치치)
Labels: Trophy Entertainment and Yedang Entertainment
Genre: electropop, dance pop
Debut date: March 2011
Debut song: Don't play around


Stage Name: Shine
Birthday: July 10, 1990
Blood Type: A
Position: Vocalist, Rapper

Stage Name: Semi
Birth Name: Park Se Mi
Birthday: September 14, 1992
Birth Place: Seoul, South Korea
Blood Type: A
Height: 166 cm
Weight: 46 kg

Stage Name: A-zi
 Birth Name: Baek So Young
Birthday: September 30, 1992
Birth Place: Seongnam, South Korea
Position: Main Rapper, Main Dancer
Height: 164 cm
Weight: 44 kg
Blood Type: O

Stage Name: Boreum
 Birth Name: Lee Bo Reum
Birthday: September 20, 1993
Birth Place: Incheon
Position: Main Vocalist, Lead Rapper
Height: 168 cm
Weight: 48 kg
Blood Type: A

Stage Name: Sui
 Birth Name: Kim So Lee
Birthday: October 5, 1994
Birth Place: Hanam
Position: Lead Vocalist, Maknae, Face of The Group
Height: 161 cm
Weight: 42 kg
Blood Type: B

Nara (Yoon Hye Won)
Ji-U (Lee Yoon Ji)
Peach (Son Jung Ae)

Their debut song: