Add a belt! I usually walk around with a leather ring belt snatched from my medieval garb. It's really handy, because then you can add pouches, mug, weapons, fan, whatever you like onto it. And it's also neat because it will free up your hands when you're walking around.
As for bunching the skirt, if you're wearing a belt you can just pick up the overskirt and tuck it into the belt. If you want a hat, grab a big straw hat (like the ones at craft stores). If you need a purse, grab a wicker basket.