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 in Inches 
                                                                  -------------------------------------------------------
                                                                   XS                           l                             34                         
                                                                   S                             l                             36 
                                                                   M                             l                             38 
                                                                   L                             1                            40 
                                                                   XL                            l                            42 
                                                                   2XL                          l                            44 
                                                                   3XL                          l                            46 
                                                                   4XL                          l                            48
                                                                   5XL                          l                            50