A touching picture book about an older sister's unconditional love for her new baby brother. Matisse is a little girl in a big world. Despite her size, she gets to have all sorts of grand adventures, like seeing the big sights of the city, making big messes, and taking big naps when her little body is all tuckered out. But when Matisse meets her baby brother, she realizes that she isn't so little after all- She's a big sister! And it's great fun to show this new little person what wonders this big world has in store.