Stella & Marigold: mermaids and mix-ups

"There is the whole world, and in it, there's a city, and in that city, there's a house, and in that house, there are two half-houses, and in one of those half-houses, there lives a pair of sisters named Stella and Marigold. In other houses in other cities, there are other people who are part of Stella and Marigold's family, and one of them is Cousin Judy, who sends them lots of presents for no reason at all. One day, for no reason at all, she sends them two purple presents. They are books, and in these books, they are supposed to list their friends. That's when Stella and Marigold discover they need to make more friends. But how? With magical recipes to make snow fall? With lots of nice Band-Aids? How about a mermaid candleholder? The two sisters are full of ideas and plans. Maybe they turn out, maybe they don't, but one thing is for sure: By the end of this book, you and Stella and Marigold will be the best of friends"--