Which celebrities attended Psy's concert?

April 13, Psy held his exclusive concert, 'Happening' at the World Cup Stadium in Seoul. This global event was the product of $30 million. The whole concert was broadcasted live via YouTube as well as mNet and Naver.

Famous for the incredible energy and excitement, countless celebrities attended Psy's global event. To name a few, actresses Im Soo Jung, Choi Ji Woo, Yoo In Na appeared at the concert as well as KARA's Goo Hara and Nicole. Big Bang member Seungri and actor Kim Kang Woo were also seen enjoying Psy's concert.

Even the international actor Lee Byung Hun has been reported to have attended the concert. Lee Byung Hun appeared in the Hollywood film "G.I. Joe" and its sequal "G.I. Joe 2."