Piaget photo event was held at Sinsa-dong, Gangnam-gu, Seoul, Gangnam K Contemporary Art Museum on the afternoon of May 10th.
Krystal Jung poses on the day.
kim hye-jin
About Krystal Jung
Chrystal Soo Jung, professionally known as Krystal, Krystal Jung or Jung Soo-jung, is a Korean-American singer and actress based in South Korea.
 Wikipedia