Perhaps this plain black skirt and dark blue tunic would serve.

She wore flat shoes, and a shirt in very fine blue and white check tucked into a plain grey skirt.

She was wearing a plain black skirt and white blouse ruffled at the shoulders.

And a plain skirt and a coat and a siren suit.

Kyria turned and cast an expressive look at Olivia's plain brown skirt and bodice.

Girls are permitted to wear a plain black skirt in place of the trousers.

Following her was an anxious middle-aged woman in plain dark skirt, blue sweater, and sensible shoes.

Conversely, a beautiful silk or chiffon blouse adds the proper allure to a plain skirt.

At the same time, she sat beside herself, wearing a doctor's white coat and a plain skirt.

With the jacket topping a plain long skirt, the entire ensemble is a stunner.