Yes, breast changes start occurring within the first couple of months, however, may take years to become fully developed, along with other secondary female sex characteristics, and it is really dependent on your genes, height, age, and how masculine your body and face is when you begin HRT. And it is important to mention that your bones will not change, but your shoe size might get smaller, If you start with thick wide feet, and lose muscle and fat, then yes your feet will lose size with weight loss and muscle atrophy.