Tropical Leaf Flower Printed Hawaii Shirt Romper Dog And Owner Matching OutfitsSize Neck Girth Chest Back Length Weight S 9. 4" 14. 2" 9. 8" 5 10 lbs M 10. 2" 16. 1" 12. 2" 11 16 lbs L 11. 8" 18. 1" 14. 2" 17 24 lbs XL 13. 4" 20. 9" 16. 1" 25 32 lbs 2XL 14. 2" 22. 8" 18. 1" 33 40 lbs Size US Bust Waist Hips XXS 4 77~83 65~71 87~93 XS 6 83~89 71~77 93~99 S 8 89~95 77~83 99~105 M 10 95~101 83~89 105~111 L 12 101~107 89~95 111~117 1X 14 107~113 95~101 117~123 2X 16 113~119 101~107 123~129 3X 18 119~125 107~113 129~135 4X 20 125~131