Nicole Yongju Jung ( Korean name : Jung Yong-Joo ) , 鄭 ・ 龍珠 , better known mononymously as Nicole ( Korean : 정니콜 ; Japanese : ニコル ) , born on October 7 , 1991 , is a Korean-American idol singer , TV presenter , promotional model , and entrepreneur .
Nicole Jung ( Hangul : 정니콜 ; Korean name : Jung Yong-Joo , Hangul : 정용주 ) , better known mononymously as Nicole , was born on October 7 , 1991 .