Explaining surrogacy to your children will vary based on the age of the children. There are many books available on this or our own experience can lend a hand in how to explain it. Most women simply let their children know that they will be helping another “Mommy” to carry a baby. The baby is not a brother or sister because the baby does not belong to our family. The other Mommy’s tummy doesn’t work for carrying babies so we are going to help her.