1
Yoona was the first ever Idol to endorse a big cosmetics company with Innisfree.
2
She loves to eat midnight snacks so much that she was considered as SNSD's queen of Midnight Snacking.
3
Yoona loves to eat cereal before going to bed.
4
Yoona is nicknamed Him Yoona because of her strength.
5
Taunts Jessica with cucumbers whenever she can.
6
Yoona was supposed to debut as an actress but she danced so gracefully that she ended up becoming a member of Girl's Generation.
7
She dated her fanboy, the actor, TV Host, singer & model Lee Seung-gi from September 2013 through August 2015.
8
Yoona makes Hyoyeon listen to her until the wee hours of the morning.
9
According to the members, Yoona is the dishwasher of the group.
10
She is part of Girl's Generations Dance Trio along with Hyoyeon and Yuri.