Inconvenient monster alarms, a sparkly array of princess guests, and spot-on slapstick pacing make for a party readers will celebrate. Today is Princess Magnolia’s birthday party, and she wants everything to be perfect. But just as her guests are arriving . . . Brring! Brring! The monster alarm! Princess Magnolia runs to the broom closet, ditches her frilly clothes, and becomes the Princess in Black! She rushes to the goat pasture, defeats the...