"Hun har kjole og sko på."
Translation:She wears a dress and shoes.
in a very limited case, you can leave out the article in English, for example if you are meaning it like a uniform. EG, he wears wears suit and tie for to work not casual clothes. She wears dress and heels out to dinner, not pants and sneakers. But most of the time, yup, you have to have the article.