Im Yoon-ah (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. Apart from her group's activities, Im has participated in various television dramas, notably You Are My Destiny (2008), which marked her career breakthrough and earned her the Best New Actress award at the 45th Baeksang Arts Awards.