TaeYeon
Birth Name: Kim Tae Yeon (김태연)
Date of Birth: March 9, 1989 (1989-03-09)
Position: Leader, Main Vocalist
TaeYeon joined SM Entertainment after winning the grand prize for the Best Singer Award at the 8th SM Young Star Contest in 2004. She frequents SooYoung's Chun Bang Ji Chuk radio program (co-hosted with Sungmin of Super Junior) as a guest.
Jessica
Birth Name: Jessica Jung (제시카 정), Jung Soo Yeon (정수연)
Date of Birth: April 18, 1989 (1989-04-18)
Position: Lead Vocalist
Jessica joined SM Entertainment after being discovered at the SM's Starlight Casting System in 2000. She was born and raised in the United States and has advanced English speaking skills. She has gained anti-fans due to rumors of her dating various celebrities, (feuled by photos on the internet, some proven to be fake) including members of other SM groups.
Tiffany
Birth Name: Stephanie Hwang (스테파니 황)
Korean Name: Hwang Mi Young (황미영)
Date of Birth: August 1, 1989 (1989-08-01)
Position: Lead Vocalist
Tiffany grew up in Diamond Bar, California and briefly attended Diamond Bar High School before moving to South Korea. She graduated from Korea Kent Foreign School and joined SM Entertainment after winning the SM Starlight Casting System (USA-LA)Contest in 2004[citation needed]. She is a native English speaker and can also play the flute.
HyoYeon
Birth Name: Kim Hyo Yeon (김효연)
Date of Birth: September 22, 1989 (1989-09-22)
Position: Supporting Vocalist/Lead Dancer
Hyoyeon was known to be the Top Dancer Trainee in SM[citation needed]. She performed at the 2005 MKMF Award Show dancing as Boa's silhouette. She is also close with Min, a JYP trainee, as both girls were a part of The Little Winner's Dance Team.[citation needed]
YuRi
Birth Name: Kwon Yu Ri (권유리)
Date of Birth: December 5, 1989 (1989-12-05)
Position: Supporting Vocalist/Lead Dancer
YuRi is one of the main dancers and was spotted through a winning first place in a dance competition by SM town.
SooYoung
Birth Name: Choi Soo Young (최수영)
Date of Birth: February 10, 1990 (1990-02-10)
Position: Supporting Vocalist
Sooyoung can speak fluent Japanese her debut as an entertainer in Japan as part of Route-O. During her time in Japan she spent time, shared a living area and trained with fellow SM artists BoA (SM soloist) and Sunday (part of SM's CSJH The Grace, and previous SM soloist in Japan). She is currently a DJ for the Chun Bang Ji Chuk radio program (co-hosted with Sungmin of Super Junior)
YoonA
Birth Name: Im Yoon Ah (임윤아)
Date of Birth: May 30, 1990 (1990-05-30)
Position: Supporting Vocalist
Previous Works: TVXQ 'Magic Castle' M/V (2004), SANYO Eneloop CF (2006), TEUN TEUN English 'Follow Me' CF (2006), Super Junior 'U' M/V (2006), TSZX The Grace '열정 (My Everything)' M/V (2006), ELITE School Uniform CF (2007), HAITAI Beverage Sunkist 'Lemonade' CF (2007), Clean & Clear CF (2007), MBC Drama '9 Hits, 2 Outs' (2007), Super Junior 'Marry U' M/V (2007)
YoonA graduated from Daeyoung High School and joined SM Entertainment after being discovered at the 2002 SM Saturday Open Casting Audition. She got her start in the industry by filming commercials and acting for music videos, and thus has the most experience among the Girls' Generation members.
Sunny
Birth Name: Lee Soon Kyu (이순규)
Date of Birth: May 15, 1989 (1989-05-15)
Position: Supporting Vocalist
Sunny was the last member to join the group and was a "hidden" trainee at SM Entertainment until her debut. She is known as the "secret weapon," [citation needed] and has the least amount of training in SM entertainment among the girls[citation needed] having trained previously with another company before joining SM. Also, she along with Jessica Jung have been rumoured to be nieces of Lee Soo Man, the founder of SM Entertainment, this has not been clarified and is most likely to be a false rumour.
SeoHyun
Birth Name: Seo Joo Hyun (서주현)
Date of Birth: June 28, 1991 (1991-06-28)
Position: Lead Vocalist
Specialty: Piano
She is one of the main vocals and was chosen by SM to become part of SNDN due to her powerful vocals.
Credits : Soshipower