UYS has a few items. Linked you to meshes, because not entirely sure where everything is sorted.
http://www.clubcrimsyn.com/sims2.html might have a few things too, but I'm not entirely sure if everything has pregmorphs.
GoS - here you'll find pretty much any style you're looking for, and a lot of the female clothing has pregmorphs. Their
maternity theme might have some few goodies, too.
