I would start at Target or Walmart first. This costume should be easy to find and they are relatively inexpensive. If not try looking at party stores and costume stores.
party city
You can find kitty whiskers at Walmart or Party City. If you are wanting to buy them online then you can buy them at Amazon, costumekingdom.com, and Newegg.com.
You can find Hello Kitty suits for children, on craig's list, ebay, and many other online trading places. you can also buy them from costume companies such as costume express.
One good place to look for a Hello Kitty costume would be on Ebay. Nextag.com is also another option. You could even visit your local Wal-Mart or Target to see if they have any in stock.
The small size Bad Kitty costume pants fit women size 2 - 4
Check online. I found baby Hello Kitty costumes on spirithalloween.com, partyamerica.com. Amazon.com sells some Hello Kitty accessories such as hats and headbands that could be paired with a pink dress for a costume.
All I think of is Recycling. Just find bits and pieces of stuff. Hope this helped. ;) -HollyMolly03
some costume stores might have them, or you can get creative and make your own!
a devil costume
You could find an Indian costume at www.partycity.com, under the costume section. In addition, you could also find an indian costume at www.buycostumes.com.
You can find a lion costume that is not a characterized lion costume at partycity or costume express or a halloween store located in your area
There are lots of really cool places where you can get this product from. All the places offer a wide selection and are very reliable. For more information, search it online. Good luck with it!