Having cellulite doesn't mean you are overweight. Even thin people can have it. If you are overweight, however, losing weight may reduce cellulite.
Cellulite is more common among women than men. If other women in your family have cellulite, there's a good chance you will too.
Other factors that influence how much cellulite you have and how visible it is include:
Lack of physical activity
Total body fat
Thickness and color of your skin