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Partypooper (Diary of a Wimpy Kid Book #20)
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  • Published: 21 October 2025
  • ISBN: 9781761351341
  • Imprint: Puffin
  • Format: Paperback
  • Pages: 224
  • RRP: $16.99

Partypooper (Diary of a Wimpy Kid Book #20)

A side-splitting birthday disaster from the #1 international bestselling Diary of a Wimpy Kid series (Book 20) (Volume 20)

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Paperback
21 Oct 2025
EBook
21 Oct 2025
Audiobook
21 Oct 2025
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International bestselling author Jeff Kinney serves up heaps of laughs in Partypooper, the 20th book in the Diary of a Wimpy Kid series.

You’re Invited—RSVP for Fun!

It’s Greg’s birthday—and you’re invited to the chaos. In Partypooper, the 20th book in Jeff Kinney’s global smash-hit Diary of a Wimpy Kid series, Greg Heffley is planning the ultimate party—for himself.

But when the guest list grows, the decorations flop, and the surprises backfire, this birthday bash turns into a total blowout—just not the kind Greg had in mind.

Packed with cake disasters, family fiascos, and classic Wimpy Kid humor, this book is perfect for readers ages 8–12.

Collect all the books in the #1 bestselling Diary of a Wimpy Kid series: Diary of a Wimpy Kid (#1) | Rodrick Rules (#2) | The Last Straw (#3) | Dog Days (#4) | The Ugly Truth (#5) | Cabin Fever (#6) | The Third Wheel (#7) | Hard Luck (#8) | The Long Haul (#9) | Old School (#10) | Double Down (#11) | The Getaway (#12) | The Meltdown (#13) | Wrecking Ball (#14) | The Deep End (#15) | Big Shot (#16) | Diper Överlöde (#17) | No Brainer (#18) | Hot Mess (#19) | Partypooper (#20)

See the Wimpy Kid World in a whole new way with the #1 bestselling Awesome Friendly books, told from the perspective of Greg Heffley’s best friend Rowley Jefferson: Diary of an Awesome Friendly Kid: Rowley Jefferson’s Journal | Rowley Jefferson’s Awesome Friendly Adventure | Rowley Jefferson’s Awesome Friendly Spooky Stories
  • Published: 21 October 2025
  • ISBN: 9781761351341
  • Imprint: Puffin
  • Format: Paperback
  • Pages: 224
  • RRP: $16.99
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About the author

Jeff Kinney

Jeff Kinney is a #1 New York Times bestselling author of the Diary of a Wimpy Kid series and the Awesome Friendly Kid series. He is a six-time Nickelodeon Kids’ Choice Award winner for Favorite Book and has been named one of Time magazine’s 100 Most Influential People in the World. He spent his childhood in the Washington, D.C., area and moved to New England, where he and his wife own a bookstore named An Unlikely Story.
portrait photo of Jeff Kinney

Also by Jeff Kinney

Hot Mess: Diary of a Wimpy Kid (19)
No Brainer (Diary of a Wimpy Kid #18)
Big Shot (Diary of a Wimpy Kid #16)
Diper Överlöde (Diary of a Wimpy Kid #17)
The Deep End: Diary of a Wimpy Kid (15)
The Getaway: Diary of a Wimpy Kid (BK12)
Diary of a Wimpy Kid (BK1)
See all

Praise for Partypooper (Diary of a Wimpy Kid Book #20)

Kinney presents a story that is conversational and accessible, humorous and fast-paced . . . Partypooper is an entertaining, fast-paced story that delivers exactly what fans love – humour, honesty and the very complex and sometimes dramatic reality of growing up.

JULIE DEANE, Reading Time