It just struck me as incredibly weird that there are photologs actually IN the supermarket taking pictures of her. If I were her I'd just think how bizarre that situation was: here I am doing the most mundane thing in the world-- buying groceries-- and there are people out there who'd want to photograph me doing this!! I've always looked at pap pics without really thinking of how there had to be a photographer THERE in order for those pics to exist.
The whole situation must feel quite awkward if you think about it. Or maybe not. Maybe she basks in the attention and loves every second if it. I'd just feel incredibly claustrophobic, and it must get tiring... like when you really don't feel like dressing nice and wearing makeup, but you sort of feel you have to because of the possibility you may be photographed later.
Come to think of it though, surely these paps don't stalk her (she's not that huge of a star)... how do they find out she's about to leave for shopping or any of the things we often see pics of her doing? I wonder if she has her publicist call these paps before heading out...