- Illustrated Chapter Books
- Ages 8–12
- Comedy
Diary of a Wimpy Kid: Partypooper
Book 20 of 20 in Diary of a Wimpy KidView the full series
The twentieth mainline Wimpy Kid book, built around Greg planning the ultimate birthday party for himself. It is a milestone entry with classic party-disaster comedy and the same high-accessibility format.
- Best for8–12
- FormatIllustrated
- Length224 pp
- Read aloud~3 hr10 min
The vibe
What it’s like.
Style
- Conversational
- Comedic
Tone
- Funny
- Irreverent
- Silly
- Warm
Themes
Experience meters
What’s it about?
The story.
Greg Heffley is planning the ultimate party for himself, which means expectations are high and reality has a lot of room to disappoint him. As the guest list grows, decorations flop and surprises backfire, Greg's birthday plans turn into another classic Wimpy Kid disaster. Partypooper is the twentieth mainline book in the series, so it works as both a fresh birthday-themed comedy and a milestone for long-term fans. The premise is simple and child-friendly: parties, popularity, family interference, social pressure and the uncomfortable gap between what Greg imagines and what actually happens. Jeff Kinney's familiar diary-and-cartoon format remains the major strength, making the book highly approachable for children who want lots of jokes, fast pages and a narrator who is funny precisely because he is so often wrong.
Fit check
Right for your child?
Where it lands by age
- 1
- 3
- 5
- 7
- 9
- 11
- 13
- Best fit · 8–12
- Read aloud · 7–11
- Independent · 8–12
Prose load
Moderate
Visual support
High
Reluctant-reader friendly
Very
Read-aloud quality
Strong
Works well for
- Reading aloud
- Reading together
- Gift-buying
- Reluctant readers
Nothing in the book is likely to concern most parents. Safe to recommend without preview.
Bedtime suitability
3 / 5 · Workable
Sensitive-child
4 / 5 · Good fit
Graphic intensity
1 / 5 · None
Best for
- Reluctant reader pick
- Birthday party story
- Party disaster
- Series milestone
- Diary format
Avoid if
- Sensitive to party exclusion
- Wants school setting
- Wants kind role models
- Dislikes cringe humour
Particularly good for children who are…
- Reluctant reader
- Struggling with reading
- Making friends
- Anxiety and worry
In the classroom
How it works in school.
The definitive reluctant-reader gateway — a free-read favourite whose diary format also offers an accessible model for diary and recount writing.
A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.
Why it lands
Why they love it.
Why kids love it
The specific charm is dread — the social dread of having to throw a party, invite the right people, decorate the house, and not be too embarrassed in front of guests. Every nine-year-old who has felt that birthday-week pressure recognises it. Greg gets to suffer it on the page so the reader doesn't have to.
- Friendship and belonging
- Breaking the rules safely
- Trickery and cleverness
- Being understood finally
- Family belonging
Why parents love it
The Wimpy Kid for the birthday-week slot — the one to hand a child stressing about whether their party will be embarrassing, which most children do. The twentieth book in the run, but reads cleanly enough on its own. A reliable bridge between the films and the rest of the series.
- Shared humour
- Quick to read
- Nostalgia
In the series
Diary of a Wimpy Kid.
20 books · open the series →
About the author & illustrator
Jeff Kinney.
If you liked this
Three ways out of this book.
If you liked this, try…
Lateral matches. Same shelf, different texture.
Come into this from…
Easier or preparing reads — perfect lead-ins.
Where to go next…
Escalation reads — a step up in scale, silliness, or stakes.
More like this…
Books that share themes and topics with this one.
Buy or borrow
Pick up a copy.
- Bookshop.org ↗
- Waterstones ↗
- Amazon UK ↗
- Hive ↗
When you buy through the links above, we may earn a small commission — it never costs you more, and it never changes the books we choose. How we’re funded →