Ways that you explained to your little one they were adopted...

We have an awesome photo book that DS's birthmom gave us a month after she placed him with us. It has pictures of her and her whole family (including birthdad b/c they are still happily together) and lots of pics of her showing off her pg belly! So I can show DS, "Here is you when you were in [birth mom's] belly!" What was extra special and sweet was on the last page of the book is a pic of DH, our bio girls, and I holding DS in the hospital with caption "Here you are with your awesome new family." How amazing is she????