modest black maxi dress KOH KOH Womens Short Sleeve Ruffle Elegant Dressy Wedding Guest Prom Bridesmaid Cocktail Party Flowy Long Tall Formal Dresses Gown Gowns, XS 2-4 : Clothing, Shoes & Zapaka Women Black Midi and cardigans Pick Model:Model 5 color-light-teal

modest black maxi dress KOH KOH Womens Short Sleeve Ruffle Elegant Dressy Wedding Guest Prom Bridesmaid Cocktail Party Flowy Long Tall Formal Dresses Gown Gowns, XS 2-4 : Clothing, Shoes & Zapaka Women Black Midi and cardigans Pick Model:Model 5 color-light-teal

Zapaka Women Black Midi Formal Dress with Slit Spaghetti Straps Mermaid Little Black Dress with Lace, Black / US22W

If I swapped the tee for a white oxford button down, and the slippers for black penny loafers, the formality would bump up enough to be suitable in many workplaces

color-light-teal

Pick Model:Model 5

All the words you used to describe it, I agree

and cardigans