Disney has featured many princesses in its TV shows and movies through the years -- but never a little girl princess. Until now. This animated series features Sofia, an ordinary girl who becomes a princess overnight when her mom marries the king. The adventurous young girl, first introduced in the 2012 TV movie "Sofia the First: Once Upon a Princess," must learn how to adjust to royal life. Offering Sofia words of wisdom are classic princesses -- including Ariel, Belle and Jasmine -- who make special appearances as they help advise the youngster during her transition to royalty. Throughout her journey, Sofia learns that it isn't having a title that imparts royal demeanor; it's that having the characteristics of honesty, loyalty, compassion and grace make one worthy of the role.