I have found some photos of T-ara's Ji Yeon featuring in drama "Hello,Miss' together with Lee Da Hae.Ji Yeon is showing a very different image in the drama.

As you can see in the photos,she seems to be rebellious,you can hardly imagine that the girl in the photos is the cute and innocent Ji Yeon you can see today.

Her rebellious character in the drama reminded me of f(x)'s Sulli who played the role of a rebellious teenager in movie "Punch Lady",rebellious girls turned out to be innocent!

Credits to Tiarafan!