Regarding maternity clothes and return policy: (I know this is the wrong thread... but oh well)
I like Old Navy. Some of their larger stores have a level with maternity and kids clothes. But in the off chance you don't have one near you, you can always return anything you get online at one of their retail stores. They don't even have to have the item in their store.
I haven't tested it out, but this is what friends have told me.
Most of my clothes are from old navy. Love the undies too! I only have one other pair of pants and wool pea coat from motherhood maternity.