I'm actually trying to decide what size to order for DD too. Everytime I think about measuring her, she's asleep. One of my friends who has one say's she has a 15 inch b/c she want her DD to be able to wear it for awhile. She says she can actually fit it around her neck too. I don't think it would help teething much to wear it around the ankle.
Re: Amber teething necklaces...