1.) Hyoyeon

Real name: Kim Hyo-yeon
Stagename: Hyoyeon
Birthdate: September 22nd, 1989
Birthplace: Incheon, South Korea
Occupation: Singer, dancer and model

South Korean born Hyoyeon was actually didn't want to participate the audition held by SM Casting system during 2000. But since her mother is a big fans on South Korean boyband - HOT - her mother then asked her to participate, hoping that they will eventually meet her idol. She passed the audition.Kim Hyoyeon then became a member of Girls Generation and her mother got herself a new idol!

2.) Jessica

Real name: Jessica Jung (Jung Soo-Yeon)
Stagename: Jessica
Birthdate: April 18th,1989
Birthplace: San Fransisco
Occupation: Singer, Dancer, Actress and Model

Jessica Jung was born on April 18th, 1989, in San Fransisco. She was very fluent using two languages - Korean and English. Jessica is one of main vocalist on Girls Generation.

3.) Yuri

Real Name: Kwon Yuri
Nickname: Yuri
Birthdate: December 5th, 1989
Occupation: singer, dancer, entertainer

Joined the label when she won 1st place on 2001 SM Best Young Dancer . She also performed on TVXQ "Beautiful Life" Music Video, plating the role as a ballerina on Super Junior first movie - Attack on The Pin up Boys. Yuri was also playing roles on Unstoppable Marriage sitcom, along with Sooyoung.

4.) Tiffany

Real name: Hwang Mi-Young
Stagename: Tiffany
Birthdate: August 1st,1989
Birthplace: US
Occupation: SInger, Actress, TV presenter and rapper

Hwang Mi-Young or SNSD Tiffany is an idol singer on South Korea which also the main vocalist on Girls Generation KPop group.

5.) Yoona

Real name: Im Yoon-Ah
Stagename: Yoona
Birthdate: May 30th, 1990
Occupation: Singer, dancer, actress, model and dancer

SNSD Yoona was born on May 30th, 1990 in South Korea and have B blood type. Yoona is also taking position as the the third lead dancer on Girls Generationgirls band.

6.) Seohyun

Real name: Seo Joo-Hyun
Stagename: Seohyun
Birthdate: June 28th, 1991
Birthplace: Seoul, South Korea
Occupation: Singer, dancer, model and actress

Seo Joo Hyun - also known as SNSD Seohyun - are the youngest SNSD member. But eventhough she's the maknae - the youngest member, she's also the lead vocalist and lead dancer of the popular Girls Generation KPop girls band.

7.) Taehyeon

Real name: Kim Tae-yeon
Stagename: Taeyeon
Birthdate: March 9th, 1989
Occupation: singer, dancer, entertainer, Radio DJ, TV host

Kim Taeyeon, is a South Korean singer which also the leader of Girls Generation. She also worked as Disc Jockey and released her own solo album. In Taiwan, she was known as Taiyan.

8.) Sunny

Real name: Lee Soon-kyu
Stagename: Sunny
Birthdate: May 15th, 1989
Birthplace: US
Occupation: Singer, dancer, TV presenter and Radio DJ

So Nyuh Shi Dae Sunny was born in US on May 15th, 1989. She was living as refugee on Kuwait but then moved to South Korea during Gulf War. Sunny is the niece of SM Entertainment founder, Lee Soo Man.

9.) Soohyung

Real name: Choi Soo-young
Stage name: Sooyoung
Birthdate: February 10th, 1990
Ocuppation: Singer, Dancer, Actress, Model, TV host and Radio DJ

Choi Soo-young is one of lead dancer and singer of SNSD. Soo Young was involved on many individual projects beside her activities on Girls Generation because SNSD Sooyoung considered as one of the most talented South Korean idol.

Source:http://www.squidoo.com/so-nyuh-shi-dae-girls-generation-snsd