I keep gaining weight on my face, is this hereditary and what can I do to prevent from gaining weight on face?

You are completely correct. Our gentics will determine where the fat stores will go. Obviously, if you have a low body fat percentage, then you will probably have less weight on your face. I would advise you not to worry so much. Everyone (including me at times) seems to be so concerned with his or her appearance, when in reality, no one really cares about a tiny flaw (I don't even think it is a flaw, some guys definitely prefer that). I'm sure you know that those celebrities are underweight and bony as hell - disgusting! But if it really matters to you, then just continue to lose weight (don't go underweight!) and you will most likely see less chubby cheeks.