You'll find that people losing weight is a common theme in this list, but it's not the only one. Some people just needed to make subtle changes to their appearance in order to feel happier with the way they look. Often, a new hairstyle is can dramatically change the way your face looks. A different method of applying makeup can achieve the same thing. This young woman took both routes.
The two pictures were taken four years apart, with the 'before' image showing her as she was when she was 19 years old. Those teen years can be difficult for all of us as we experiment with our style, trying to work out who we really are. She's grown her hair out, highlighted her eyes and lips, and (we think) had a little dental work done as well. This is what the younger generation call 'glowing up!'