I'd like to hear (or read ) what items you consider to be an absolute must in every woman's wardrobe, regardless of her personal style. Ready for any occasion, but with bare minimum. How much of a challenge is it to come up with such list?

I'm thinking LBD, pretty day dress, great pencil skirt, classy white shirt, casual t shirt in basic colors, cardigan, a pair of jeans, statement item (if so, which one), comfy flats, elegant pumps, boots, few favorite accessories,...

Please add your list.