I'm the same as your update. I tend to enjoy these sorts of illusions and normally can see them "both ways" for some specific illusion. Not so on this one. The

I'm the same as your update. I tend to enjoy these sorts of illusions and normally can see them "both ways" for some specific illusion. Not so on this one. The rest of the image (i.e. beyond the dress) leads me to also perceive the light being yellow-ish, in which case a white dress would certainly not appear blue.