A bright, funny, and feel-good picture book about how families come together and celebrate their differences, perfect for fans of Shh! We Have a Plan! and The Secret Society of Aunts and Uncles.Today is going to be the best day ever. It's the big family barbecue, Grandma June's house is big and bustling, and best of all there are... Cousins! Cousins always dress to impress, whether it's strutting the runway, playing baseball, navigating the Seven Seas-- Oh no! A Mississippi Mud Pie slide! Sometimes cousins don't get along, but it's a good thing they can share: spooky stories, late-night snacks, and secret that they'll only tell... Cousins!