I finally knew how they did it.
It came from a website called yearbook yourself.
Basically, you find a photo of your face and upload to the website.
From there you can choose the different kind of fashion style from the timeline.
But do that note that the face shape and space may not fit nicely with your face.
Here's what I did to myself.
Typical old teacher with those beehive hairdo kind of look.
Will I look like this when I slim down? (minus the hairdo hahah...)
I tried with Gerald's face.
It was fun choosing which look to go.
Yearbook Yourself too,
Peiyan