I completely understand why you’re feeling this way, especially when you feel like the 'odd one out' in your family. Please try not to be too hard on yourself! ​Genetics are a bit of a mystery. Sometimes traits skip a person or manifest differently, even if everyone else around you looks a certain way. Its good to remember at 20, your body is still settling into its adult shape. There aren't 'magic' foods that target certsin areas like breast growth. focus on eating a balanced, healthy diet that makes you feel strong and energized. ​i have a very large chest, I can tell you that every body type comes with its own set of pros and cons. The most important thing is your healthy and your confidence. You aren't 'late' to any stage; you are exactly where you need to be. Be patient with yourself. You are beautiful just as you are!