"They may be twins, but Lizzie and Penny Berry are complete opposites. Penny is the life of the party--loud and outrageous, while quiet and thoughtful Lizzy is often left out of the crowd. The one trait they do share is a longing to do something spectacular with their lives, and as far as these two are concerned, there's no better place to make their dreams come true than London. Presented with a once-in-a-lifetime house-sit at their grandmother's...