item measures 20" from armpit to armpit laying flat   

item back measures 25.5" from neck to bottom laying flat                                                                                                       

Because there is no standardized sizing in clothing, it's highly recommended to use measurements provided and compare to an item you already own for best fit. Please don't go by size tag alone.                                                                              

Please check out my other clothes in ALL categories.  I have many and am always posting more everyday.