I started out looking for a genuine flamenco dress and found them upwards of $300, even used, and so I decided to go with a Halloween costume dress, and this one is quite nice for the money.  The black torso part is made of a thin crushed velvet fabric typical of costumes, nothing substantial, but does the job.  It was large in the waist and I had it taken in, though, as it sort of showed no shape otherwise.  Fabric is stretchy so I can get into the dress even though there are no zippers and despite the alteration to narrow the waist.