SIGNED EDITION
 
Diary of a Wimpy Kid: Partypooper (Book 20) - Hardcover – 21 Oct. 2025 - by Jeff Kinney 
 
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.