Claim: Girls' Generation has girls.

Im Yoon-ah -LRB- Hangul : 임윤아 born May 30 , 1990 -RRB- , better known by the mononym Yoona , is a South Korean singer and actress . She debuted as a member of girl group Girls ' Generation in August 2007 , who went on to become one of the best-selling artists in South Korea and one of South Korea 's most popular girl groups worldwide .   Apart from her group 's activities , Yoona has participated in various television dramas , notably You Are My Destiny -LRB- 2008 -RRB- which was a ratings success , marking her career breakthrough , and Prime Minister and I -LRB- 2013 -RRB- for which she won an Excellence Award at the 2013 KBS Drama Awards . Following the ratings success of her Chinese television debut , God of War , Zhao Yun -LRB- 2016 -RRB- , she starred in South Korean television drama The K2 -LRB- 2016 -RRB- .