If anything was worn under this I think it would be a bra or some sort of shirt to protect against the roughness of the textile. It seems that chaffing and rashes would occur frequently without one. However, I think that there wouldn't be anything worn beneath, and rather there are other pieces that go over top of it, such as a cape and a second skirt. Many traditional dancing outfits contain multiple pieces and trying to put more pieces beneath this dress seems difficult.