SOLVED. YA Fiction: Two polar opposite sisters, split POV (paperback had 2 front covers - first side was a blond sister, and you'd flip the book upside down to read from the perspective of a more gothic teen). [s]

[Éabha]

I read this book I'm going to say sometime between 2006 to 2011. I have googled it and nothing has returned. I can remember the story revolved around 2 polar opposite sisters (one blond and popular, the other a goth). the book had split POV, but it wasn't every second chapter. Literally 50% of the book was from the first POV, then you'd flip the paperback 180 degrees and read back to front. The book had 2 front covers.
I don't even think I want to reread this book, it's just annoying me that I can't remember the title or find it! Think they were either English or Irish.

[Becca]

There's a list for Double Sided Books - I've had a quick look through and couldn't see anything promising, but worth you double-checking.

[Becca]

Aha - Sisters . . . No Way! by Siobhán Parkinson, maybe? It wasn't on the list but I'll add it now.

[Éabha]

yesss Becca!!! thank you mystery solved!!