Bust:

Measure the fullest part of your bust. Don't follow your bra size. Follow circumference of your whole bust - all the way around. Sizes correspond to your bust or Belly whichever is bigger.
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                                                                  Size                         -          Chest in Inches
                                                                  -------------------------------------------------------
                                                                   XS                           l                            34                         
                                                                   S                             l                            36
                                                                   M                             l                            38
                                                                   L                              l                            40
                                                                   XL                            l                            42
                                                                   2XL                          l                            44
                                                                   3XL                          l                            46
                                                                   4XL                          l                            48
                                                                   5XL                          l                            50