Once upon a time there was a happy family: A mom, a dad, a gerbil, and the most beautifulest, cleverest, ever so kindest Princess. . . .

On one horrible day, a new ruler is born into a young princess's family -- a ruler she dubs His Royal Highness, King Baby. This small interloper is so smelly. He is so noisy. And all the talk in the Land is about him ("Such a nice burp!" "Oh, what a lovely poo-poo!"), nonstop, ALL THE TIME! Has there ever been such an era of wicked rule? With whimsy and sympathy, Sally Lloyd-Jones tells a satisfying tale of usurped attention -- and rapprochement -- that every big brother or sister will relate to, while illustrator David Roberts captures all the hilarious details of a child's active imagination.