I adopted my child when she was 3 months old and she will turn 2 next month. When do you think I should tell my daughter that she is adopted and how should I do it?

One of my friends is adopted and she knew pretty early in her life, around 10 or 11. Apparently she started asking questions after reading a Babysitters Club book, in which the protagonist suspected that she was adopted and went about investigating her hunch. Her parents eventually revealed the truth to her after much coaxing. She told me that she took it pretty well because she was so young and the fact that her life resembled a book she loved somehow distracted her from the realities of her adoption. Her parents initially planned to tell her when she turned 18 but she's glad she found out in different circumstances, in her own terms. There is never a perfect time to tell your child about her past but her present and future is filled with nothing but love and I'm sure when you do tell her, she will know this :)