Fat
To understand why a smaller body might coincide with smaller feet, it is helpful to understand the function of fat. According to Mayo Clinic nutritionist Katherine Zeratsky, fat is stored energy, packed into efficient cells to be burned off when your body needs it, such as when you exercise. Hormones and genetics dictate where fat cells are stored in each person, including the feet. Although different people are predisposed to lose fat in different body areas first, eventually even the fat stored in your feet will get burned for energy.
Edema
Swelling of the legs, ankles and feet, called "edema," often accompanies obesity. Edema can be caused by something simple, such as a poor diet or too much salt intake, or something more complex, such as a poorly functioning heart or kidneys. The lymph system -- part of the human circulatory system -- can have a hard time moving fluid in an obese person, resulting in fluid pooling in the lower extremities. As a person loses weight, bodily fluid circulates better and there is less edema in the feet, resulting in noticeably skinnier feet.
Foot Health
Excess body weight can be harmful to the feet. Bones and ligaments in the feet can spread, due to both lack of regular exercise and the strain of excess body weight. This can lead to foot pain or progression of an inflammatory condition called plantar fasciitis, in which the connective tissue of the bottom of the feet becomes irritated and painful. Losing weight, along with regular foot exercises and stretching, can help counteract foot pain associated with being overweight.
Shoes
It is important to properly support your feet during and after weight loss. Get a pair with a stiff sole for optimum support and soft upper to minimize irritation. Also, try them on in the afternoon or after a long walk, when feet will be a little more swollen. High heels are generally bad for feet. When you are picking shoes for activities such as walking or dancing, be sure to only wear them for those activities, as specialized shoes can harm feet if worn for other things.
