A mother elephant explains her use of donor eggs to her child. With charming illustrations and simple words, "Mommy, was your tummy big?"can help parents who used in vitro fertilization and donor eggs begin to explain the process to their small children. The book has been praised by many mental health professionals who work with fertility clinics, and an NYU Child Study Center article offers it as an example of how to tell a young child about his/her donor egg origins. It is on all major lists of books recommended for helping parents explain the use of donor eggs, including that of ASRM(American Society for Reproductive Medicine).