From the Swankyknits.com website

Using many of the lazy knitting techniques I used in my Baby Saq pattern, this is an ultra cute and ultra swanky ruffled sweater for your chihuahuas that includes no seaming! Why chihuahuas you might ask? Well you might. Because I have three in different sizes and they are the only kind of dog I have ever owned. This sweater if fairly customizable. You will want to measure your dogs’ neck, chest, and from the abdomen (where the hind leg meets the tummy) to the armpit (where the front leg meets the tummy). A little note on sizing, the XS is really XS. It was a little too small for my baby, who is only 3 lbs!

Measurements

• Neck--3-4 (5-6, 7-8, 9-10) in
• Chest 7.5 (9.5, 11.5, 13.5) in