Gertie the littlest yak is getting ready to welcome a new arrival to the family, and that means big sister planning and big sister sharing. She can’t wait to share all her favorite things — like her curly-wool comb for important back-scratching, or her pinecones for playing yak throwing and catching — because the newest yakling will have so much to learn! But how does Gertie feel about sharing Mummy? Is there enough room in Mummy's heart to love both Gertie AND the new arrival? This adorably warm and reassuring story from the award-winning creators of shows readers that there will always be room for families, and hearts, to grow.