A low-maintenance, pressure-free memory book for growing families expecting their second child. Through playful prompts, checklists, and space for photos and drawings, parents and the new Big Sib document the journey from courtship to becoming Two, Three, and finally Four. Warm, witty, and endlessly flexible, it captures first smiles, sibling bonding, sleepless nights, and family firsts. A heartfelt keepsake that celebrates the changing family dynamic and the arrival of an adorable new co-star. The perfect gift for parents welcoming baby number two — and celebrating the new Big Sib A pressure-free, fill-it-in-anytime keepsake for busy families (no guilt if you're years behind!) Companion to the bestselling When We Became Three Funny, honest, and heartwarming — captures the beautiful chaos of parenting two little ones “The adventure you’re beginning belongs to Four.”Perfect for an expecting parent with a toddler or young child at home who wants a fun, flexible keepsake to document their family growing from three to four.