^I honestly don't remember where we got them isolagirl but if you Google plastic star stretch bracelet or plastic heart stretch bracelet you'll probably find some online sellers. I think we probably just got them at a Target or a Wal-Mart or something like that. Maybe even a dollar store. They're so ridiculously cheap...I'm actually really surprised Viviana even wears them. Pretty cool.
edit: found this version on eBay. kind of cool actually!