In my house, October means more than apple cider, autumn leaves, and pumpkins: It’s also the official commencement of Pajama Season. My daughters, ages 4 and 7, are usually too hot for pajamas in the summertime. But when the temperature starts to drop, and the cozy Halloween prints come out of storage, I revel in the cuteness as they gleefully reach for their skeleton- or pumpkin-themed PJs.