New York fashion brand Theory has opened up a franchise store in Korea. On March 29, an opening party was held celebrating the grand opening of the brand’s newest location in Sinsa-dong, Gangnam-gu, Seoul.

Sooyoung of Girls’ Generation was one of the many celebrities who were in attendance at the opening event.  Even though Sooyoung sported a casual look in a jeans, sweater, and blazer combo she pulled it off well. She managed to look as stunning as ever with the simple casual style.

Theory has locations throughout the United States, Europe, Japan, Hong Kong, and now Korea. The brand new South Korean location is said to have the original sensibility that is reminiscent of the streets of New York.

View photos and video from the event below. What are your thoughts on Sooyoung’s red carpet style?