I’ve used sign language consistently with both sets of my twins.. my first set just turned 3, and now again with my 1 year old twins. Babies can communicate long before they can speak, and signing has been such a powerful way to understand what they need. Mine started signing back around 6 months old. We use a mix of Australian and American signs, along with a few we’ve created ourselves. My husband is American, so the blend comes naturally in our home. Consistency is what matters most if you wa