I think I'm on my third trip or so. No matter which shop I'm in it's not letting me buy anything now. It letsme click the add to cart button, but nothing gets added. It says on the bottom of the top screen "styles available to buy: 0". I have plenty of money and there are new items from the day before, so what's going on? --- ~" A chat with you, and somehow death loses its sting."~
styles available to buy is how many open slots of inventory to buy stuff with. :) If it says 0 you don't have stockroom space. If you're still working with Michaela, she keeps the place fully stocked the entire time aside from the times she asks you to go buy something.