I'm completely clueless on children's clothes sizes and adopting a toddler is making it even more confusing. Our son is currently 20 months old and we got an update on his size when he was about 17 months. At this time, he was 30 inches and 20 lbs. we sent a care package recently, with all the clothes in size 18-24 months.

We will likely be bringing him home around christmas/new year's and my mom is planning a shower for early october. It is very unlikely we will get an update on his size in time to add it to the registry.

What size should we register for/tell people to buy? We dont want a ton of clothes because we're so unsure of his size but we dont want him running around naked either ;). I was thinking 2T?