I ordered two sizes, kept one, as I was unsure about the sizing and the reviews were all over the board.  I ended up keeping the XL which is true to my measurements based on the Amazon size chart.  The dress is a stretchy knit under dress with sequins sewed on mesh over dress.  It is BEAUTIFULLY done all edges are well finished, sleve edges are beaded so there is no scratchiness of the sequins rubbing on your skin.  the gold & silver sequins are very glittery and it was a beautiful dress.