Dog Tuxedo, Frenchie Mini Couture Choose from sizes x-small, small, medium, or large. Thick, 100% interlock cotton for comfort and softness. Cute applique and embroidery makes it perfect for a fun, formal look. X-Small: Size from neck down back is 9". Chest circumference at armpits is 15". Neck circumference is 11". Small: Size from neck down back is 9 1/2". Chest circumference at armpits is 16". Neck circumference is 12" Medium: Size from neck down back is 12 1/2". Chest circumference at armpits is 20". Neck circumference is 16" Large: Size from neck down back is 18". Chest circumference at armpits is 27". Neck circumference is 17"