Barbara Costello, known as Babs on social media, is a mother of four and grandmother of nine. Babs has taken the internet by storm with her warmth, enthusiasm, practical tips, and motherly wisdom, earning her the title of "the internet's favorite grandma." The bestselling author of Celebrate with Babs and Every Day with Babs, she’s also a regular guest on Today, Good Morning America, and The Drew Barrymore Show, where she shares her household tips, tricks, hacks, and delicious recipes. A former teacher and preschool founder, she is also a wife to her loving husband, Mr. Babs.

Margeaux Lucas was born on Halloween, so she loves spooky things like black cats, full moons, and very starry nights. She began drawing constantly from age four, amazing her friends with pictures of people and animals—especially horses, which were her favorite. Her love of picture books came from the many hours she spent before bedtime reading from the collection at her grandmother's house. As a teenager, she loved fashion, but found that she was better at drawing than sewing. She studied graphic design in school, but is largely self-taught as an illustrator. Margeaux loves to travel, and three of her favorite cities are Paris, London, and New York, her current home. Margeaux's work reflects her love of fashion, nature, and the many shapes, sizes, and colors that people come in, plus the constant exuberance of children.