Spanx faux leather leggings xs (left) vs Amazon Faux leather leggings xs (right). Spanx come in regular, petite, and long These are the closest look-alike and feel-alikes that I have found to the Spanx. Personally, I still prefer the Spanx - they are more slimming and not as constricting. You can dress these up or down These Amazon Tanks are the best! Long and lean, great for laying and you can wear a regular bra. TTS Size XS.