So...did Yoona have plastic surgery?

I think she got her nose done, her predebut nose was wide at the tip nose it is as much also the fact her nose used to be flat, now its rises up more. But all of SNSD have gotten plastic surgery at least one, and Yoona hasn't even got the most work done...hope that helps

she looks really diffferent she's not natural. she did her nose, jaw and even her belly button(there's pictures)

I don't know..Maybe, people say she had it on her nose but you can't be sure until she says if she has or not

I think just the nose

Didn't she also do her jaw?

Maybe, I think she had got her nose done or her jaw.