Will fat baby become fat next time too? How to groom my girl to have good figure ? Any tips?

My little gal had thunderous drumstick legs last time. She was so round from face to body, totally like a ball. Hub and I were worried that she will be a fat gal but we didn't have fat genes in both our family. She grew taller but still round. She didn't eat a lot but still have that baby fats. Thankfully at the age of 5, she has grown taller, slimmer and losing her baby fats. So nothing to be afraid of.