It turned out very tiny - it fits perfectly on my grapefruit which measured at 12.5" circumference, which, per Bev's handy chart, would be similar to 5-5.5 lb baby. I've worked the numbers for larger sizes, though there's some tweaking needed for the actual knitting. I'm not sure if I think the yarn is too big for such a small hat? It was fun to reword the pattern, anyway, even if it turns out I need to redo 1st grade math.
In terms of the photo, the DOF is a bit shallower than it should be. I'd like to figure out how to get the whole item sharp, but maintain the blur of the background.