out of all the members, I think she's the most professional
lol I think they're all pretty professional, why do you choose Yoona as most professional? :p I'm interested to know.
I think deep down she's just a kid and I know she likes to play jokes on people. Her professional side seems a little forced because she does have to do a lot of important roles like acting and ads and stuff.
I'm glad she's not afraid to be true self time to time :p