Breast growth
Hi and thanks for your question!
An eating disorder can delay but not destroy breast development. The breasts are fully developed when the rest of the body is fully developed, and they grow and change shape throughout puberty. You may still be in puberty, as it was delayed because of the eating disorder. The only way to enlarge your breasts in a natural way after puberty is to gain weight. Taking medicines, exercising or using creams will not help.
Breasts come in all shapes and sizes, and it isn’t certain that you will have the same size of breasts as your mother and sister. The most important thing you can do is to accept your body as it is, and learn to like your breasts and the rest of your body.
We recommend that you read this article: A short boob guide for girls
Remember: you’re great just as you are!
Best wishes