Susan Marston has had a lifelong love of children’s books—as a child, a babysitter, a teacher, and, for twenty-five years, as editorial director of the Junior Library Guild. Susan says that while writing What Color Is Your Favorite Month?, she and Stepanka shared the goal of playfully capturing the essence of each month of the year so beautifully represented in Magdalena’s illustrations. Susan’s favorite month is March, and the colors she thinks of are inspired by her mother’s garden, where yellow daffodils on green stems are often topped by a sparkling dollop of white snow. She lives in Brooklyn, New York.

Alina Slyshik is a children's book illustrator from Eastern Europe who loves drawing character-driven illustrations using fun color combinations and textures, which makes her art unique and full of life. Her favorite characters in illustrations are children, animals, and whimsical creatures. She enjoys watching bizarre movies, reading books, and playing video games. In a parallel universe, she sees herself as a detective solving crimes or a marine biologist looking for undiscovered underwater creatures. She lives in Bratislava, Slovakia.