I'm a short Asian girl, should I be skinny or chubby to look less childish?

I'm 5'2'', obviously short :( I'm 103 lbs so I think I'm normal. When I was in Asia, my dad never mentioned my weight or my height. But ever since we came here, he constantly scolds me that I'm too short and too skinny, I think it's because everyone's taller and fatter here. I think I'm not that skinny or fat, just normal, but my dad wants me to look more chubby so that I'll be less tiny looking. Does it work? I personally think because I'm short, I'd better be not fat, it's worse if I look both fat and short. What do you think? If I should gain weight, how much should I gain?