If you find the girls don't like the legs of the PJs, I make cute soft flannel nighties that have a loose fit, they can potty with them on, and the fur doesn't mat while wearing.....
check out some of the materials here
http://www.yorkietalk.com/forums/showthread.php?t=56361
I'm going to be posting a huge new selection of flannels and I also have some Christmas prints and lightweight cotton.