I brown townyzed your face.
Here's what I found:

The pictures were also at separate angles so lining up hairlines isn't accurate to compare with.. And simply put, my cheeks are fat when I smile, so I don't tend to do that too often. I also have an overbite and when I wish to hide this fact, I tend to give myself an under-bite to stretch out my face before taking pictures. That stretches out my cheeks so they don't appear so fat. I'm slightly insecure about my fatness, so it shows in pictures of me. I've gotten rather good at hiding it most times.
Or disregard and congratulate me on losing a lot of weight in 15 minutes. I'm going to be very rich selling the secret. lol