Louboutin Hung Up Shoe Question

  1. Hi, Just wondering what the purpose of the back tab on the 'Hung Up' is for. Is it to keep your foot in the shoe? Without it will you still be able to walk in them? Thanks in advance
  2. Okay, does anyone know how the 'Hung Up' fit size wise? Do you have to go up a size or do they fit true to size?
  3. i went with my regular louboutin pump size, which is half a size bigger than my normal size.