SeoHyun
Stage Name: SeoHyun (Korean: 서현)
Real Name: Seo JooHyun (Korean: 서주현)
Birth Date: June 28, 1991 (age 19)
Height: 168cm
Weight: 47kg
Language(s): Korean, English, Chinese and minimal Japanese

Yoona
Real Name: Im Yoona or Im YoonAh (Korean: 임윤아)
Birth Date: May 30, 1990 (age 21)
Height: 166cm
Weight: 47kg
Language(s): Korean, minimal English, Chinese and Japanese

SooYoung
Real Name: Choi SooYoung (Korean: 최수영)
English Name: Summer Choi (Korean: 써마 최 )
Birth date: February 10, 1990 (age 21)
Height: 170cm
Weight: 48kg
Languages: Korean, Japanese, minimal English and Chinese

Yuri
Real Name: Kwon Yuri (Korean: 권유리)
Birth Date: December 5, 1989 (age 21)
Height: 167cm
Weight: 45kg
Language(s): Korean, minimal English, Chinese and Japanese

HyoYeon
Real Name: Kim HyoYeon (Korean: 김효연)
Birth Date: September 22, 1989 (age 21)
Height: 160cm
Weight: 47kg
Language(s): Korean, Chinese, minimal English and Japanese

Tiffany
Stage Name: Tiffany (Korean: 티파니)
English Name: Stephanie Hwang (Korean: 스테파니 황)
Korean Name: Hwang MiYoung (Korean: 황미영)
Birth Date: August 1, 1989 (age 21)
Height: 162cm
Weight: 48kg
Language(s): Korean, English, minimal Chinese, Japanese and Spanish

Sunny
Stage Name: Sunny (Korean: 써니)
Real Name: Lee SoonKyu (Korean: 이순규)
Birth Date: May 15, 1989 (age 22)
Height: 158cm
Weight: 43kg
Language(s): Korean, minimal English, Chinese and Japanese

Jessica
English Name: Jessica Jung (Korean: 제시카 정)
Korean Name: Jung SooYeon (Korean: 정수연)
Birth Date: April 18, 1989 (age 22)
Height: 163cm
Weight: 43kg
Language(s): Korean, English, minimal Chinese and Japanese

TaeYeon
Real Name: Kim TaeYeon (Korean: 김태연)
Birth Date: March 9, 1989 (age 22)
Height: 162cm
Weight: 44kg
Language(s): Korean, minimal English, Chinese and Japanese