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Cover of Dork Diaries: Sister Showdown
Illustrated · ages 9–12

Dork Diaries: Sister Showdown

Tales from a Not-So-Bratty Little Sister

Written and illustrated by Rachel Renée Russell

Book 16 in Dork DiariesView the full series

Bestseller
Top giftable

Nikki's ready to start high school - until she feels too ill to stop little sister Brianna hijacking her diary. With 72 hours to reinvent herself, it's an all-out sister showdown. The latest Dork Diaries.

  • Best for9–12
  • FormatIllustrated
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The vibe

What it’s like.

Style

  • Comedic
  • Conversational
  • Epistolary

Tone

  • Funny
  • Silly
  • Warm
  • Irreverent

Themes

On the pagesiblings, diary, sibling rivalry, high school, friendship, first crush, middle school

Experience meters

Energy4/ 5
Humour5/ 5
Scariness1/ 5
Peril1/ 5
Wonder1/ 5
Cosiness3/ 5
Emotional intensity2/ 5
Conceptual intensity1/ 5

What’s it about?

The story.

Fresh from Paris and buzzing with new clothes, great friends and finally some real attention from Brandon, Nikki Maxwell is pumped to start high school at Westchester Prep. But it's all a bit overwhelming - so much so that she starts feeling genuinely unwell, and that's exactly the moment her little sister Brianna seizes her chance to swipe Nikki's diary and take over. With only seventy-two hours to reinvent herself before the big first day, Nikki has to wrestle back her diary and her dignity, while Brianna causes maximum chaos. Told in Nikki's doodled diary style - with plenty of Brianna's own contributions - this sixteenth book turns the spotlight on the sister rivalry that's simmered through the whole series, pairing the usual friendship and crush comedy with a warm, funny look at siblings who drive each other up the wall but love each other underneath.

Fit check

Right for your child?

Where it lands by age

A 9-12 diary comedy for the upper band, given the start-of-high-school and sibling storylines. Light prose and cartoons keep it easy and reluctant-reader friendly.

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  • Best fit · 9–12
  • Read aloud · 8–11
  • Independent · 9–12

Prose load

Light

Visual support

High

Reluctant-reader friendly

Very

Read-aloud quality

Workable

Works well for

  • Reading together
  • Gift-buying
  • Reluctant readers
Low sensitivityNo content warnings

Nothing in the book is likely to concern most parents. Safe to recommend without preview.

Bedtime suitability

2 / 5 · Better outside bedtime

Sensitive-child

5 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Funny diary
  • Friendship drama
  • Reluctant readers
  • School stories

Avoid if

  • Wants high stakes adventure
  • Prefers no crush storylines

Particularly good for children who are…

  • Moving to secondary school
  • Making friends

Why it lands

Why they love it.

Why kids love it

Bratty little sister Brianna finally hijacking Nikki's diary - just as Nikki's about to start a new school - puts the long-simmering sibling rivalry front and centre for laughs, with plenty of Brianna's own chaotic scrawlings.

  • Friendship and belonging
  • The underdog winning
  • Being understood finally
  • Proving yourself

Why parents love it

A quick, doodle-packed read that reluctant readers love, with a relatable, affectionate look at siblings who wind each other up but stick together. Low-worry and full of laughs.

  • Shared humour
  • Quick to read

In the series

Dork Diaries.

16 books · open the series →

About the creators

About the creators.

RR

Rachel Renée Russell

Writer & illustrator · United States · b. 1959

Rachel Renée Russell is an American author-illustrator born in 1959, best known as the creator of Dork Diaries, the doodle-packed diary series narrated by self-declared dork Nikki Maxwell as she survives the snobbery, crushes and mean-girl politics of Westchester Country Day middle school. A former lawyer who developed the series with her daughters, Russell writes each book in Nikki's exclamation-heavy handwriting, cartoons and lists, threading warm friendship and self-acceptance through the slapstick. Across sixteen main-series titles the formula stays reliably funny and inclusive, quietly reassuring readers that their gloriously imperfect selves are more than enough. A near-universal staple for 9–12s, and one of the great reluctant-reader pipelines for children who love Diary of a Wimpy Kid and want a girl-led equivalent.

More from Rachel Renée Russell
ER

Erin Russell

Writer · United States

Erin Russell is an American writer and co-author of the Dork Diaries series, which she creates with her mother, Rachel Renée Russell. The books are narrated as the doodle-packed diary of self-declared dork Nikki Maxwell as she navigates the crushes, mean-girl politics and friendship wobbles of Westchester Country Day middle school. Working as a family team, the Russells thread warm friendship, honesty and self-acceptance through the slapstick, keeping Nikki's voice funny, exclamation-heavy and reliably reassuring across sixteen main-series titles. Though the series carries her mother's name on the covers, Erin is a long-standing creative partner on one of the great girl-led reluctant-reader pipelines — a near-universal staple for 9–12s who love the diary-and-cartoon format of Diary of a Wimpy Kid.

More from Erin Russell
NR

Nikki Russell

Illustrator · United States

Nikki Russell is an American illustrator and the artist behind Dork Diaries, the hugely popular illustrated diary series written by her mother, Rachel Renée Russell. The youngest of the mother-daughter team, Nikki is the namesake of the series' heroine, Nikki Maxwell, and it was her own doodling and dorky sense of humour that helped inspire the books. Across the series she supplies the trademark cartoons, doodles and exclamation-packed handwriting that make each page feel like a real teenager's scribbled journal — a big part of why the books hook reluctant readers so completely. The look she gives Nikki Maxwell's world, from Westchester Country Day to Paris, is warm, funny and instantly recognisable, and central to a series that has become a near-universal staple for 9–12s who love Diary of a Wimpy Kid.

More from Nikki Russell

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Last reviewed · July 2026Suggest a correctionHow we recommend

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