Jessica Jung (Korean name: Jung Soo-Yeon; Hangul: 정수연; Hanja: 鄭秀妍; born April 18, 1989) is a Korean-American singer, dancer, actress and model. She was born in San Francisco and is fluent in both English and Korean. She is a member of the South Korean nine-member girl group Girls’ Generation.
She auditioned at the SM Entertainment Casting System and joined the company in 2000.She had been trained for seven years as a trainee before debuting with Korean girl group Girls’ Generation
Her younger sister, Krystal Jung, is a member of the Korean girl group f(x), also created by SM Entertainment.