I think the true character type wears them more on a headband and ALL the time as an adopted eccentricity, but I see the knitted/crocheted hats quite often, too. I've never had one (I tend to have to avoid overly cutesy things, lest I look like a petite little doll of a person), but I considered making one for my cousin, who I think would like the style.

The real question is, did you make it? I have several patterns for these type of hats and they're so cute. I'm definitely making one for my future child. My grandmother used to knit me little white "cat caps" all the time when I was young. They're very cute.