Your shoes won’t be seen unless you’re doing a portrait session with full length images, so bring along whatever shoes are comfortable. Comfort is key here, as you’ll be able to see your overall confidence, comfort and emotion in your headshots.
I’ve had a few clients choose to wear high heel shoes because it ‘sculpts’ them or makes them look taller, or changes their posture. It doesn’t, but if high heels somehow make you feel more confident, then go ahead and go for it!