Birth Name: Jessica Jung (제시카 정)
Korean Name: Jung Soo-yeon (정수연)
Nicknames: Sica, Jessi, Jess, Sergeant Sic, General Sic, Sicachu, Sickal (knive), Sica-sama
Position: Main Vocalist
Date of Birth: April 18, 1989
Zodiac Sign: Aries
Bloodtype: B
Sibling(s): 1 younger sister (Krystal Jung)
Language: Korean (Fluent), English (Fluent), Chinese (Basic), Japanese
Specialty: Dance
Casted: 2000 SM Casting System
Training Duration: 7 Years 6 Months
Korean Name: Jung Soo-yeon (정수연)
Nicknames: Sica, Jessi, Jess, Sergeant Sic, General Sic, Sicachu, Sickal (knive), Sica-sama
Position: Main Vocalist
Date of Birth: April 18, 1989
Zodiac Sign: Aries
Bloodtype: B
Sibling(s): 1 younger sister (Krystal Jung)
Language: Korean (Fluent), English (Fluent), Chinese (Basic), Japanese
Specialty: Dance
Casted: 2000 SM Casting System
Training Duration: 7 Years 6 Months