She does have changed a lot since then indeed, and not only has her appearance matured but her persona as well. She's the kind of maknae you can't help feeling proud of as if she were your own family. This reminds me of how Taemin has also grown up a lot since debut, I got the same feeling with her, only Taemin's my absolute bias, so there were no sighs, hahaha. Jiyoung looks gorgeous.