Alas, I have no sewing machine. The AOS uniforms for Uhura and Gaila come from the officially licenced 2009 dolls by Mattel. TOS Operations red uniforms come from a Barbie Star Trek anniversary box set from 1996, and Number One's uniform tunic came from a 9" Pike figure, and I made the collar. I'll have better pics of her next week as I'm waiting for her new body to come so she can wear her ring, and I got her a new tunic without the stain below the Enterprise delta.
ETA: I actually have, erm... WAY more Trek dolls now than I did when I first started posting snaps. Including a custom Gaila, Boyce, Cait Barry, Colt, Rand, and a 1:6 scale diorama of Pike's ranch in Mojave. So I'll update eventually with more pics!