"Look for "low-profile" knee pads at any sporting goods store. They are very thin and I think will serve well for dance without being too obvious under a costume. I use them myself when I play indoor volleyball. Good luck."
I think I posted this because I DO care.
"He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion."
-- Author Unknown