Tiffany was born in California, United States and grew up in Diamond Bar as the youngest of three siblings. She auditioned at the SM Starlight Casting System and joined the company in October 2004 in Los Angeles. She was trained at SM for 3 years and 7 months. She graduated from Korea Kent Foreign School in April 2007, but Tiffany attended primary school in California in Sou...th Pointe Middle School (US) and Diamond Bar High School (US). Tiffany speaks fluent English and Korean.Tiffany (born August 1, 1989), born Stephanie Hwang, is a Korean American singer and dancer of the Korean girl group Girls' GenerationIn 2008, she released two singles with co-members Jessica and Seohyun — the first called "Oppa Nappa" (Korean: "오빠 나빠") and the second titled "Mabinogi (It's Fantastic!)", a theme song for a video game.
Tiffany has also participated in the OST of SBS' drama Jamyeonggo with the song "나 혼자서" ("By Myself"), and was featured in a duet with K.Will called "A Girl, Meets Love".
She was also featured in "너만을 느끼며" ("Oh! My Love to You") by The Blue, alongside bandmate Sooyoung.
Apart from all her solo works, Tiffany was the co-host of Mnet's Sonyeon Sonyeo Gayo Baekseo (Korean: 소년소녀 가요백서), along with Kim Hyesung from November 5, 2007 to June 13, 2008. Furthermore, Tiffany, along with other Girls' Generation member Yuri, is currently the MC on MBC's Music Core.
She also sang the song for Caribbean Bay with her fellow members Taeyeon, Seohyun, Jessica and Yuri and with boy group 2PM.