Joanne's had tube-top-dress fabric for %60 OFF. Otherwise, it's ridiculously priced!!!! W/ my serger I whipped out 3 for Birdy in about 15 minutes MAX! If you don't have a serger---still super simple, just sew sides together & create small hem. But w/ the serger is was super simple & FAST! 2 (shorter than the one pictured) girls size dresses cost less than $2.50 each---one is going to be converted into a long top.
This long one is actually probably for adult ladies but it was too fabulous to pass up---it was the last bit just tossed on top of the other bolts. It cost maybe $5? I serged the bottom to her size & as you can see, used the excess for a head band/tie.