I've ever only found one costume at qqcosplay.com (www.qqcosplay.com/PA3/pa3chiwh… as you can see not very accurate and I've heard mixed reviews for the site) and beyond that i don't know else I'd want to pick as cosplay options. I've bought all my stuff from amazon so far, so if you have any cosplay sites you buy from and know are trustworthy, tell me.
So the only way to get chidori's costume would be to make it myself (which is impossible because I know nothing of sewing) or get it commissioned.
If you know anyone who does really good commissions and are trustworthy let me know on that too. Never asked for a commission before but i'm willing to give it a try.