Perfect for fans of Goth Girl, this addictive supernatural series is ideal for girls of 9+ to sink their fangs into... In Book 3, the secret is out - cheerleader Olivia and vampire Ivy are twins!

Now that Ivy and Olivia have told their friends that they're twins, they have to come clean to their adoptive parents.

But Ivy's dad doesn't even want to meet Olivia! When the vampire officials realise Olivia knows the truth about vampires, they demand that she pass three tests to prove she can be trusted.

But these aren't any old tests - they will really get the blood pumping.

Yikes! One thing's for sure - if the sisters can get through this, they can get through anything!These kinds of situations only happen in My Sister the Vampire.

A vampire book for girls who want to read about young love and innocent paranormal romance. Have you collected the whole `My Sister the Vampire' series?SwitchedFangtastic!Re-Vamped!Vampalicious!Take TwoLove BitesLucky BreakStar StyleTwin SpinDate with DestinyFlying SoloStake Out!Double Disaster!Flipping Out!Secrets and SpiesFashion FrightmareSpooktacular!Fangs for the MemoriesLook out for Sienna Mercer's other great series, `My Brother the Werewolf'. 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 stories for girls about a girl who reminded her of herself, and gave her the most fun, fabulous twin she could imagine . . . a vampire twin.