I have listed below the doggy areas you'll need to measure for a perfect dog clothes fit. Take your time, be careful and remember you may need to go one or two sizes up depending upon these calculations or if your doggie has a lot of hair/fur. I have included a size chart on each page for every item.
Also see DOGGY CLOTHES SIZES article for more help or just a laff!

 1. The broadest part of the Chest is typically right behind the front legs. (Remember, if doggy has a large girth or a lot of fur, go up a size). This is the most IMPORTANT size.

2. The circumferance of the Neck will determine 'comfortability'. You do not want it too tight.

3. For Body Length measure along backbone from the base of the head to the base of the tail or from where the collar rests to where the tail is attached. Tis to Laff!