Oh, brilliant. Much more thanks to you all. I was thinking these things over and I was almost thinking about just buying a pair of slipper socks and cutting the bottoms out, so they're already fit to the situation. I'm just worried about fitting the curves in the fabric. I'm not very skilled yet, when it comes to sewing.
I need to make a pilgrimage up to the fabric store this weekend for another costume, so I'll definitely be scoping out some of the suggestions you pointed out. :]
Thank you, thank you again! I was at a loss, haha.