Girl group f(x) Sulli's younger days are becoming an issue.

Recently, a set of captures were posted online with the title "Sulli during her child-actress days".

The captures seem to be from a TV program that featured the characters of the drama that Sulli was in back in 2005.

Sulli looks a lot younger in the photo, while showing off youthful beauty and pale skin.

Netizens who saw this photo of Sulli psoted "Sulli looks the same as today", "so cute", and etc...

Photo Credit: Online Community