Bottom's Up in Okemos is a very small store that is stuffed to the brim with leotards, dance shoes, warm-ups, skirts and lingerie. It is honestly difficult to walk around inside without nearly knocking something over, because they just have so much stuff. The two ladies that run it have a wealth of knowledge about the local dance scene, and can tell you everything you need to know about which studios are the best and who teaches what, etc. They also do a great job of fitting pointe shoes and working with you until you find a brand you are happy with.
Even if you are not a dancer, the store has a full range of brand name bras, panties, bustiers, you-name-it. It's just gorgeous stuff. It's all much classier, and much higher quality that anything you can find at Victoria's Secret or a chain store.
Prices range from cheap to very expensive. You just need to look through stuff until you find a good deal. They have frequent buyer punchcards where after you accumulate a certain amount of punches you get free items, which can save you about $80+ if you are talking about pointe shoes.