The black mermaid maxi dress pairs a flattering cut with true formal polish. Ruffled detailing sits over a fitted mermaid silhouette. Expect a floor-sweeping maxi length. Style it with strappy heels and a clutch for formal nights, then swap to sleek sandals to dress it down. Explore more maxi dresses. Flattering Mermaid silhouette Maxi length Ruffled detail Perfect for formal events Shown in black A formal standout you'll reach for again and again.