The best and cheap way is to make them. Are you talkingjust poofy skirts or tutus? If you just wany a poofy skirt, any flared out skirt will work when you buy a pooofy petticoat to go underneath it..
Are you talking about those scene skirts? I used to see lot's of them at places in the mall, Hot Topic for example.
Hope Ive helped =)
Try marshalls or TJ max. I've gotten things like that there before
hot topic! they ALWAYS have them there! good luck hunn!
you can get them at claires!