This is one of the oldest depictions of Egyptian dancers found so far. It's an ostracon from Thebes dated to about 1300BCE As you can see, the costume is pretty rudimentary although we can, perhaps, spot the origins of the hip scarf!!
But then, "traditional" is maybe not the right title for it - it's more "ancient". I think they stopped wearing those dressed a few thousand years ago... I don't think I would like to be cought in one on a stage in Cairo...
An artist is not someone who is inspired but someone who inspires others - Salvador Dali