Who is to say that you can't rewrite Swan Lake to make it about dogs? All you have to do is grab the script, Ctrl-F "swan" and replace it with dog. That's not hard at all. That's how I wrote my script, Underground Wars. I just took the Star Wars script and replace "Star" with "Underground." Now it's a completely unique work. Or, at least it will be once I'm cleared of Disney's lawsuit.
Remember how I said that a cape is a bad wardrobe choice for a dog because of the way it falls on their body? The tutu is the exact opposite. A tutu always looks good on a dog because it's made to stick out, and it's harder for them to shake off of their waist. That's the key to a good dog outfit: make it impossible to shake off.