Colorfulhouse Polka Dots Cake Skirts Bow-knot Pet Dresses for Small Dogs Size XS: Chest girth 11.8 inches, Back length 8.2 inches, Neck girth 7.8 inches Size S: Chest girth 13.7 inches, Back length 9.8 inches, Neck girth 9.4 inches Size M: Chest girth 16.5 inches, Back length 11.6 inches, Neck girth 11.8 inches Size L: Chest girth 18.8 inches, Back length 12.9 inches, Neck girth 12.9 inches Size XL: Chest girth 21.5 inches, Back length 15.1 inches, Neck girth 14.5 inches