It can be awfully cute when babies smile in their sleep—but is it a real smile, or just a reflex? We turned to experts to learn more. Among all of your baby’s first milestones, smiling is arguably one ...

Is there anything cuter than a smiling infant? Why yes, there is — a baby smiling in their sleep. Those tiny, twinkling baby grins were one of the many delights I experienced as a new mom. (My babies ...