Krystal Jung (Korean name: Jung Soo-jung;[1] Hangul: 정수정; Hanja: 鄭秀晶; born October 24, 1994), better known mononymously as Krystal, is an American-born South Korean idol singer, actress and the younger sister of Girls’ Generation member Jessica Jung. Discovered by S.M. Entertainment in 2000, she began filming for commercials and music videos by 2002. She is currently a member of the Korean quintet girl group f(x), formed by SM Entertainment in 2009.
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