Ken Denmead points out that Starfleet uniforms are available in extra large sizes for men, but not for women:
So what would we logically deduce by this odd state of affairs? That somehow only male Trek fans wear clothes over the size of medium? Or that no woman bigger than a certain body type would/should ever want to wear a miniskirt? The only conclusion I can come to is that whoever licensed the rights to make Star Trek costumes this year made a big mistake.
UPDATE: My wife says:
"Trekkies should be glad to find any woman of any size willing to wear a uniform for them."