The natural size of your hips and breasts are determined by several factors–genetics, diet and exercise.
If you are an ectomorph with a thin, angular frame with few curves, you might be able to alter your diet to slightly increase your curviness. You also might consider estrogenic Chinese herbs that may stimulate estrogen production, resulting in more curviness. Do not take any herbs without seeking the advice of a medical professional.
The Department of Agriculture designed a nutritional matrix called, “My Food Pyramid” that outlines dietary guidelines for healthy adults. It recommends eating a varied diet of fruits, vegetables, whole grains, lean proteins, low-fat dairy foods, nuts and nonsaturated fats. Lean proteins such as low-mercury fish, eggs, nuts and lean cuts of beef and poultry will help fill out your form. Low-fat dairy such as yogurt, kefir and milk also provide high-quality protein that can build curves.
Add nonsaturated fats to every meal and snack. Nonsaturated fats include olive, canola, flax seed, hemp seed and safflower oil. Nonsaturated fats are found in all types of nuts–almonds, walnuts, macadamia, cashews, and pine nuts. Walnuts have as much as 20 grams of fat per one-quarter cup and of that amount, only two grams are saturated, making them an excellent food to increase hip and bosom size.
Some traditional Chinese herbs might help round out a flat figure by stimulating estrogen production, which builds curves. Commonly used estrogenic herbs include licorice root, dong quai and vitex extract. These are available through licensed acupuncturists or doctors of Chinese medicine who are trained to assess if such estrogenic herbs are appropriate for you. Do not self-prescribe; consult the appropriate medical professional.