C.E. Evans wrote:
Going by the accounts of various actors who don't wear prosthetics, spending hours in a Starfleet uniform costume is just as bad (IIRC, they're very tight, they tend to ride up, they can be extremely hot under set lighting, and--if you're not careful--they're easily prone to wardrobe malfunction).
Well, at least the women got to go commando in the Starfleet uniforms (according to Marina Sirtis).
Doesn't help that the costumes are uncomfortable to begin with. Like most costumes, they're designed to look good on camera more than anything else. Even the ENT Starfleet costumes weren't all that
comfortable to wear for long periods of time apparently (although they were supposedly better than the ones worn in previous shows).