The third youngest is Sooyoung.
SEOHYUN! Youngest in SNSD innocent girl
Sooyoung
In order of age:Leader - Tae YeonJessicaSunnyTiffanyHyo yeonYuriSoo youngYoonaMaknae (Youngest) - Seo Hyun
yes.her name is Seo Joo Hyun. seohyun is a member of snsd and she is the youngest.
Kyuhyun, but the youngest in sub-unit Super Junior-M is Henry.
Liam is the very third youngest.
Taeyeon is the most popular in SNSD :) and the prettiest in snsd
Leader - Tae Yeon Jessica Sunny Tiffany Hyo yeon Yuri Soo young Yoona Youngest - Seo Hyun
I think it's JB but I know that Aston is the youngest, and the hottest!:)
Nobody was, is, or will be kicked out of SNSD.
Night snsd
Harry is