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A funny, super-girly story with a vampire bite to it. Sink your teeth into Ivy and Olivia's fourteenth fright-time adventure!


The twins are adjusting to high school, but everything is still topsy turvy.  Ivy’s flipping out about being the most popular girl in school. All she wants is some time to herself! But her band of superfans are clinging to her tighter than bats to a cave. 


Meanwhile, Olivia is on a matchmaking mission. But will Queen Goth Amelia and Skater Boy Finn be able to put aside their differences and realise they are head over heels for each other?


256 pages, Kindle Edition

First published August 1, 2014

40 people are currently reading
1216 people want to read

About the author

Sienna Mercer

39 books465 followers
Sienna Mercer grew up in Toronto, Canada. She was an only child, and always wanted a brother or sister – especially a twin. A twin would have been awesome! Sadly, she never got that sister so, when she was grown up, she did the next best thing - she wrote books about a girl who reminded her of herself, and gave her the most fun, fabulous twin she could think of!

Sienna began writing stories when she was a teenager, on a very wet day in Toronto when her cheerleading practice was cancelled - and she has not stopped writing since. She used to write in red leather notebooks while sat on her bed, but now does most of her writing in her attic, which is quite dark, and has some spooky cobwebs in the corners - the perfect location for thinking about vampires. She doesn't use red notebooks anymore, either, although she keeps them in a chest by her desk in the attic.

Sienna got the idea for My Sister the Vampire from a daydream she had - what if she had a super-cool twin sister... who was a vampire? She loved the characters - and their kooky friends and family - so much that she just had to keep writing about them.

When she's not daydreaming about vampires and cheerleading, Sienna enjoys travelling and exploring new cities, and keeps a detailed scrapbook of everywhere she’s visited. She lives in Toronto, kept company by Calypso and Angel – her two gorgeous cats. She is happily writing away and we wait for her upcoming books!

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5 stars
220 (51%)
4 stars
110 (25%)
3 stars
73 (16%)
2 stars
19 (4%)
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9 (2%)
Displaying 1 - 7 of 7 reviews
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335 reviews
September 26, 2023
oh my gosh that. was so corny 😭😭😭 all of that could've been avoided if Ivy just straight up asked if they could give her space and leave her alone, I swear
115 reviews42 followers
February 3, 2017
This is a great middle grade series for girl, no matter if they like fantasy or contempoary
208 reviews
July 16, 2025
I get it, Ivy doesn't know how to deal with being popular, and the people at high school are really pushy, but I believe this could've been solved in under 50 pages.
Displaying 1 - 7 of 7 reviews

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