Diary of a Wimpy Kid: Partypooper (Book 20)

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

Contributor: Jeff Kinney (Illustrated by)

Illustrator: Jeff Kinney

UK Delivery:

• Free delivery on all orders of £10 or more.
• £1.49 delivery fee on orders below £10.
• UK orders are shipped via Royal Mail 2nd Class.

International Delivery:

• Flat rate delivery charges vary by country.

Dispatch and Delivery Times:

• All orders are shipped from our warehouse in Northampton, UK within 48 hours of receipt during working hours.
• UK mainland orders typically arrive within 3-5 working days via Royal Mail 2nd Class.
• International estimated delivery times:
• Europe & Channel Islands: 7 to 10 working days
• USA: 7 to 15 working days
• Rest of the World: 9 to 21 working days

View our full delivery infomation here.