I feel like this book by David McPhail, about two sisters ("one was big, one was little") could have also been written for me and my sister (15 years younger than me). Like all sisters, these two are very different in some ways. One sister was crazy about frogs...the other wasn't. And very alike in others. They both liked horses...and sugar-snap peas fresh from the garden.
Charlotte is my firefly chaser and Madeleine is my star-gazer.