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by Brittany Mazique
Millie Magnus was born for the stage. So when the Overlook Little Theatre holds auditions, she's certain she'll be the star. But when her best friend Poppy Anne gets the lead and Millie gets cast as a tree, jealousy threatens everything. With Grandma Sookie's wisdom guiding the way, Millie faces her most relatable challenge yet.
Pre-Order on Amazon →Written by Disney author Brittany Mazique and illustrated by Ebony Glenn, the Millie Magnus series follows an exuberant, fashion-forward third-grader as she navigates the big feelings and bigger adventures of elementary school — with her pet chicken Extra Spicy always by her side.
Pre-order now and be among the first to read Millie's most hilarious adventure yet. The series has earned praise from Publishers Weekly, Kirkus Reviews, School Library Journal, Booklist, and The Washington Post.
Inspired by Brittany's own daughters Millie and Margaux, the series celebrates confidence, kindness, and the power of being unapologetically yourself.
At its heart, Millie Magnus Is NOT Jealous is a story about one of the trickiest feelings of childhood: jealousy. When Millie auditions for the Overlook Little Theatre certain she'll be the star, and her best friend Poppy Anne lands the lead instead, Millie has to sit with a knot of envy that's hard to name and even harder to talk about. Kids who have ever wanted something a friend got first will see themselves in her — and they'll feel less alone for it.
The book gives those big feelings room to breathe instead of brushing them away. With Grandma Sookie's gentle wisdom in her corner, Millie learns that being jealous doesn't make her a bad friend — it makes her human — and that what matters is what she chooses to do next. Children come away with a quietly powerful idea: you can be disappointed for yourself and still be happy for someone you love.
That's the take-home message young readers carry off the last page — that friendship is stronger than envy, that cheering on the people you love is its own kind of bravery, and that even a kid cast as a tree can shine in her own way.
Jealousy is a feeling most kids meet long before they have the words for it, which makes this a genuinely useful book to have on the shelf. Parents get a warm, funny story that opens the door to a hard conversation without ever feeling like a lecture, and Grandma Sookie models the kind of patient, validating response grown-ups want to offer in real life.
Teachers and school librarians will find an early chapter book that pairs naturally with social-emotional learning units on big feelings, friendship, and empathy. Millie's voice is lively and relatable, the chapters are short enough to sustain newly independent readers, and the classroom theatre setting gives kids a shared scenario to talk through together. For more classroom-ready resources, visit the educator page.
Use these open-ended questions to spark conversation at home or in the classroom:
Written for ages 5–8 (kindergarten through third grade, K–3), Millie Magnus Is NOT Jealous is an early chapter book — short chapters, lively illustrations by Ebony Glenn, and a relatable everyday challenge make it ideal for newly independent readers, while the warm storytelling keeps it perfect as a read-aloud for younger listeners too.
Frequently Asked Questions
Ages 5 to 8. It's an early chapter book — a great fit for kindergarten through third grade (K–3) readers building independence, and an equally good read-aloud for younger listeners who love a funny, big-hearted story.
The book publishes in September 2026 and is available to pre-order now. Pre-ordering means your copy ships as soon as it's released, and early pre-orders help new chapter book series reach more young readers.
It's written by Disney author Brittany Mazique and illustrated by Ebony Glenn, the same author-illustrator team behind the whole Millie Magnus series. It's published by G.P. Putnam's Sons Books for Young Readers.
Millie Magnus was born for the stage, so when the Overlook Little Theatre holds auditions she's sure she'll be the star. But when her best friend Poppy Anne gets the lead and Millie is cast as a tree, jealousy threatens their friendship. With Grandma Sookie's wisdom guiding the way, Millie works through one of childhood's most relatable big feelings.
The Millie Magnus series follows the same exuberant third-grader across every book, so any title is a great next read. Start at the beginning with Millie Magnus Won't Be Bullied, or explore the full reading order and characters on the Millie Magnus series page.
About the Author
Brittany Mazique is a children's book author who has written for Disney (Cinderella, The Little Mermaid, Tiana, Snow White) and created the acclaimed Millie Magnus chapter book series. She lives outside Washington, D.C. with her husband Edward and daughters Millie and Margaux.
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Explore the full collection — from Disney classics to the original Millie Magnus series
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