Jillycakes is not exclusively gluten-free but it is almost unbelievably creative in its flavors, virtually all of which can be MADE gluten-free. They have two cupcake offerings on the daily. Sometimes they sell out, sometimes they don't. You're welcome to call ahead, however, and if the flavors of the day appeal, staffers will be happy to set aside some for you. Did we mention the flavors? Everything from churro to strawberry cheesecake to dozens of others could be available. They do custom orders here, as well, which means you can have anything you want if you give them a little time.