I get asked this a lot! So, I thought it would be a good idea to use my own little guy to show how I measure him for his woollies! :)
1. With a diaper on...measure around the waist above the diaper (I get 16 inches):
2. Then measure around the largest part of the hip (20.5 inches):
3. Next, measure from the top of the back of the diaper, around the crotch, to the top of the front of the diaper (about 17 inches, but I'll do 18 inches):
4. Measure around the largest part of the thigh (10.25 inches...so I'll make the legs wider than that):
5. Measure from the top of the leg to the bottom...as far as you want the woollies to go (9 or 10 inches):
Ta da!