Yoona

Lim Yoona (Korean: 임윤아; born May 30, 1990), also known mononymously as Yoona, is a South Korean singer and actress. After training for five years, she debuted as a member of girl group Girls' Generation (and later its subgroup Girls' Generation-Oh!GG) in August 2007, which went on to become one of the best-selling artists in South Korea and one of South Korea's most widely known girl groups worldwide. source: https://en.wikipedia.org/wiki/Im_Yoon-a