I had chub rub even before I was pregnant, and always wore some kind of little shorts under dresses and skirts to prevent it.

I'd wear Spanx (or a cheap version of Spanx) with something tight-ish but more often, I'd just wear Luvees, which are very lightweight and much more comfortable. I also had some basic bike shorts from Target that I liked.

Now that I'm pregnant, the chub rub is getting worse, and it's almost spring so I'm going to want to wear dresses and skirts more. But I can't find anything to wear underneath them now. I've seen a couple pairs of maternity bike shorts online but they're really expensive, and since I'll need a few pairs, I'm hoping to find some that are $20 or under. I also know that Spanx makes some maternity shapewear but I'm not looking for something to hold me in, just to cover me up.

Any suggestions? What do you wear under dresses?