ballerinas...

the girls want to be ballerinas for Halloween. I realize that it is only mid-July, and Halloween is a long way off, but we've been reading the Bearenstein Bears Halloween book over and over and over again for about a week and they both want to be ballerina like sister bear. I wonder how hard it would be to make a tutu... is that something I can handle or should I call on Grandma for some help... or do you think that this phase will pass before Halloween and then they'll want to be something else? It's never dull around here.