Consider a lower or more comfortable style. Choose a thicker and more stable heel like a platform, wedge, or chunky heel to provide more support and weight distribution. Shy away from pointed-toe styles if you have wide feet or toes, opting for round or almond-shaped instead. You can also buy heeled boots or heels with ankle straps to help support your ankles.
The problem with buying new heels just for prom is that since you bought them just for prom, you don't want to get them dirty before the big night, so you never properly wear them in. Heels already do a number on your feet, but if you wear them to prom right out of the box, you risk getting blisters and cramps and having to ditch them way before the night is through because of how badly they hurt your feet.
Stretch your feet before and after you put your shoes on/off. There are some targeted stretches that will help you get at the front of the foot and ankle (key pain points from heel usage). An example of a stretch like this is pointing your toes down, and pulling your toes up with a strap, this gets the Achilles’ tendon and the calf muscles going a bit. You can replicate this stretch to the inside and outside as well.
Despite the reigning popularity of sneakers and flats, high heels will always be around. And on occasions that do call for heels, you might as well maximize the comfort level in any way that you can. So if you’ve ever hobbled home after a long day or night in heels, this tip for how to make heels more comfortable is for you: Tape your third and fourth toes (counting from the big toe) together—we recommend nude medical tape for a low-profile look, but Scotch tape works in a pinch—to alleviate pain in the ball of your foot. Sound crazy? Here’s the reasoning: There’s a nerve that splits between those two toes, which causes pain when pressure is put on it (aka when you wear heels). The tape removes strain on the nerve, allowing you to dance the night away.