
Reach for this book when your older child is expressing intense resentment, jealousy, or even performative dislike toward a new baby in the house. While many sibling books take a gentle approach, Kevin Henkes leans into the messy, hilarious, and sometimes 'naughty' feelings that big siblings actually experience. It validates that it is okay to not like the baby at first, while beautifully illustrating how loyalty eventually triumphs over jealousy. Lilly, an enthusiastic and dramatic young mouse, is horrified by the arrival of her brother Julius. She spends much of the book finding creative ways to insult him or 'disappear' him, much to her parents' chagrin. However, the moment an outsider dares to criticize Julius, Lilly's fierce family loyalty kicks in. This is an essential read for children ages 4 to 8 who need to see their complicated feelings mirrored with humor rather than judgment.
Lilly is quite mean to the baby, including shouting into the womb and frightening him with masks.
The book deals with sibling rivalry in a very direct, secular, and secularized way. The resolution is realistic: Lilly doesn't suddenly become a perfect angel, but she finds her place as a proud big sister.
An elementary student (ages 5-7) who has recently become an older sibling and is struggling with the 'fairness' of a baby getting all the attention. It is perfect for a child who feels guilty about their own angry thoughts.
Read this cold. The humor works best when the parent leans into Lilly's dramatic flair. Note that Lilly says things like 'Julius is the germ of the world,' which may give your child new vocabulary for their frustration. A parent might reach for this after hearing their child say 'I hate the baby' or 'Can we send him back?' or after witnessing a child being intentionally loud or disruptive to wake a sleeping infant.
Younger children (4-5) will giggle at Lilly's antics and the physical comedy in the illustrations. Older children (7-8) will recognize the social dynamics of the family party and the shift from internal jealousy to external defense.
Most sibling books focus on how 'helpful' a big sister can be. This book is unique because it validates the absolute hatred a child might feel before showing the shift to love.
Lilly is a spirited mouse who is used to being the center of attention. When baby Julius arrives, she is unimpressed by his fans and his constant needs. She spends her time insulting him, frightening him with masks, and trying to 're-gift' him. Her parents try to involve her, but Lilly remains defiant until a family party where her Cousin Abigail mocks Julius. Lilly immediately switches from antagonist to protector, declaring Julius the 'baby of the world.'
This overview was generated by AI based on the book's content and reviews, and may not capture every nuance.
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