Being a sister isn't always easy .

But the girls soon discover that being too close for comfort can have unexpected consequences, and when an accident happens, the sisters realise they are closer than they thought .

Marty and her sister Melissa couldn't be more different.

"That's the worst thing about my sister. She NEVER misses a chance to wind me up."

Football-mad Marty loves her Converse and helping her dad with his DIY. Melissa, however, loves all things pink and girly.

So it comes as no surprise that when they have to share a bedroom, Marty and Melissa struggle to get along.

But all that changes after a terrible accident, which helps the sisters realise they are closer than they thought...

From bestselling author Jacqueline Wilson, The Worst Thing About My Sister explores sibling rivalry and the importance of family.

The Worst Thing About My Sister is full of fun, frolics and little pearls of wisdom. Here she focuses on that old family chestnut - sibling rivalry - and gives quarrelling sisters plenty of food for thought - Blackpool Gazette