Disney Sofia the First Princess Sofia Doll. Disney Sofia the First Princess Sofia Doll: When Sofia becomes Sofia the First, a princess of Enchancia, she must adapt to an extraordinary life of royalty and learn how to be a princess - inside and out! Girls will delight in re-living her experiences with this charming Sofia the First doll/5(). Disney Junior's Sofia the First brings her royal charm to toys, clothes, books and more. Sofia is a little girl, a commoner, until her mom marries the king and suddenly she's royalty. She soon learns that behaving like a princess has to come from the heart.