Finished measurements after blocking:
5” high (from brim to crown)
5.5” wide

I cast on for the Baby size and increased my needle size since I tend to knit on the tight side in small circumferences, hoping for a preemie fit. Also added an i-cord knot just to add some flare. I striped the two yarns giving it a more marled look. Used one color for brim and top knot.