I used to be a frequent Old Navy shopper until the shorts and skirts started showing your cracks and crevices and the tops and dresses started getting cut so low that I had porn cleavage at work. I still like their tshirts and tanks though, as I ruin that type of garment pretty quickly, so there is no need to spend big bucks on items I will probably only get 5 wears from.
Visiting the day before Labor Day, during their 30% off everything sale, I couldn't find anything in my size. Apparently all of the fatties had been there the day before. They didn't have my size in white layering camis or any of the sweaters with critters on them. I can't wear their cotton button up tops because I have boobs. They didn't have any of the vneck tees that I like in anything but that hideous, thin heathered material. I found a few cute scarves that I could have fit into, but by the time I got those I was so disgusted with not finding anything else that I was too bummed to spend money.
They store was clean. The woman who asked if I was finding everything was pleasant, even when I asked if a stampede of big girls came through because I couldn't find my size in anything. I will stick to online where I don't have to route though racks of XS and M to find clothes that fit.