It implies that Park Si-yeon had a ‘not-so-beautiful’ face in the past unlike how it is now. In the discussions, the netizens said that they are astounded at the lengths celebrities go to change their appearance. While some of celebrities just choose for a simple superficial changes in terms of makeup, hairstyle and clothes, others choose the extreme route by doing plastic surgery to ‘fix’ their facial features, such as undergo a nose job or create a V-line face. Most of them said that these two procedures are the very basic ones in terms of plastic surgery but it really makes a difference in one’s face. One of the real examples is Park Si-Yeon. Based on some articles in magazines, Park Si-Yeon did get a nose job because the bridge of her nose looks strangely high and somewhat unnatural. Moreover, people who see her cosmetic ads said that they thought she was already beautiful but now either she transmogrified into freakish plastic dolls or the photoshop went seriously wrong. Here’s some comparison picture of before and after. What do you think? Following that, the netizens were surprised by how different her face looked in the past. In 1990s, Park Si-Yeon had chubby cheeks and a circle face shape, but now she has a more sunken cheeks and V-line face. A lot of people who saw her pictures commented, “Plastic surgery is not a rumor to Park Si-Yeon, She did it”; others also said “Park Si-Yeon is very different in the past pictures and the present pictures” and many other comments. Take a look at the picture on that forum here:  

Did Park Si yeon Undergo Plastic Surgery  Let s Compare Her Potential Before and After Looks   - 45Did Park Si yeon Undergo Plastic Surgery  Let s Compare Her Potential Before and After Looks   - 8Did Park Si yeon Undergo Plastic Surgery  Let s Compare Her Potential Before and After Looks   - 25Did Park Si yeon Undergo Plastic Surgery  Let s Compare Her Potential Before and After Looks   - 66Did Park Si yeon Undergo Plastic Surgery  Let s Compare Her Potential Before and After Looks   - 15