Nicknamed ShikShin by the other SNSD girls because of her big appetite.
She was discovered at age twelve after winning the 2002 Korea-Japan Ultra Idol Duo Audition.
She managed to come out as the winner.
Long before her debut with SNSD, Sooyoung sent a fan-email to Kangfull, which he replied to because he was so impressed with the mature way Sooyoung spoke.
She is a baseball fan.
Sooyoung has no dance music in her mp3 player since she likes ballads so much.
6 : jewe Says: hi! — Her favorite ice cream flavor is mint chocolate.
On 12 February 2013, Sooyoung opened up that her father suffered from Retinitis Pigmentosa, a condition that causes degeneration in the eyes, and eventually results in total blindness.