THE ONE WITH GREG'S CHAOTIC BIRTHDAY PARTY

The twentieth laugh-out-loud, fully-illustrated Diary of a Wimpy Kid book from #1 international bestselling author Jeff Kinney! A global phenomenon with 300 million copies of the series sold worldwide!

It's Wimpy Kid 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 laugh out loud Wimpy Kid fun, this book is perfect for readers ages 8-12.

WHAT'S IN DIARY OF A WIMPY KID?
50% words, 50% cartoons, 100% hilarious!
Stories that all readers can't wait to get their hands on
Laughter guaranteed!

LOOK OUT FOR:
Rowley Jefferson's Awesome Friendly Spooky Stories 2 in August 2026!
Diary of a Wimpy Kid: Fight or Flight (Book 21) in October 2026!

Have you read all the DIARY OF A WIMPY KID series?
Diary of a Wimpy Kid
Diary of a Wimpy Kid: Roderick Rules
Diary of a Wimpy Kid: The Last Straw
Diary of a Wimpy Kid: Dog Days
Diary of a Wimpy Kid: The Ugly Truth
Diary of a Wimpy Kid: Cabin Fever
Diary of a Wimpy Kid: The Third Wheel
Diary of a Wimpy Kid: Hard Luck
Diary of a Wimpy Kid: The Long Haul
Diary of a Wimpy Kid: Old School
Diary of a Wimpy Kid: Double Down
Diary of a Wimpy Kid: The Getaway
Diary of a Wimpy Kid: The Meltdown
Diary of a Wimpy Kid: Wrecking Ball
Diary of a Wimpy Kid: The Deep End
Diary of a Wimpy Kid: Big Shot
Diary of a Wimpy Kid: Diper Overlode
Diary of a Wimpy Kid: No Brainer
Diary of a Wimpy Kid: Hot Mess
Diary of a Wimpy Kid: Partypooper