Sink your teeth into Sienna Mercer's eleventh super-girly vampire story for girls. Olivia is a vegetarian. Ivy is a vampire. And they're twins?!? 'We're still double trouble!' The twins are apart, but life is as batty as ever ...Ivy's settling into Wallachia Academy, but the school's strict rules are a real pain in the neck. Back in Franklin Grove, Olivia's begun dressing like Ivy - to get in to a vampire rock concert! It's bound to cause a coffin-load of chaos. 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.