Why are do people have fat on the upper body only?

Why do some people have fat on their upper body but then have such nice legs?
Why do some people have a nice upper body but have fat thighs and calves?

everyone proportions diffirent is the only thing I can think of

I know huh. I always see this and I'm like okay you just need to lose that belly. I can't even answer why they are like this though

certain types of food like saturated fat like to hang on around the belly area.