Fast forward twenty-some years, and I've sewn clothes for my niece. My sister & I buy matching and coordinating clothes for the babies, and occasionally, we call my daughter & my nephew the twin cousins, as they were due 13 days apart- spoiler- they were born 27 days apart. Still in the same month, but one will be celebrating their second Christmas this year and the other, his first. :)
So what is this sickness? Is it some momma rite of passage? Is it just innate to match young children?