Where can you get cute belly button rings?
From a cute belly button place, like THE WONDERFUL LAND OF BELLY BUTTON RINGS!
id have to say amazon has some, if you want to look there
Piercings? You need to go to a piercing shop.
Your nearest piercing shop, or you can look up on the Internet what you're looking for, and you might find it.
claires or hot topic
http://www.tummytoys.com.au/ and http://www.bodyjewelleryshop.com/ , its best to go to proper shops/sites because they have better material, rather than places like eBay or a clothing/accessory shop where they could be made with cheap metals.