BUST:
Measure the fullest part of your bust. Don't follow your bra size. Follow circumference of your whole bust - all the way around. Jacket sizes correspond to your bust or Belly whichever is bigger.
                      

                                                                 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                            45 
                                                                   5XL                     l                            45