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Long prom dresses are the classic choice when you want a full, floor-length silhouette — Starlish's collection spans everything from sleek mermaid gowns with a thigh-high slit to flowing A-line ball gowns, in colors running from black and white through red, green, and sparkly metallics.

Necklines and details vary throughout: strapless sweetheart cuts, halter necklines, off-the-shoulder sheaths, and boho-inspired high-low hemlines all show up, several finished with ruffles, sequins, or a dramatic open back. The floor-length format works for both a sleek, body-skimming mermaid line and a fuller, more traditional ball gown shape.

Fabric spans glossy satin, soft chiffon, structured tulle, and sequined fabric for extra shine, so a long prom dress can read anywhere from classic and formal to modern and edgy depending on the cut.

Every long prom dress is available in custom sizing, from petite to plus, so the floor-length hem falls exactly where it should regardless of your height.

Want something shorter instead? Browse short prom dresses, or check out mermaid prom dresses for more fitted long silhouettes.

Frequently Asked Questions

Yes — custom sizing includes your height, so the floor-length hem is cut to fall correctly instead of dragging or riding up.

Mermaid gowns, A-line ball gowns, and off-the-shoulder sheaths all appear in the collection, in a range of necklines and fabrics.

Not with the right fit — mermaid and A-line styles are cut to allow movement, and a properly hemmed length shouldn't restrict dancing.

The collection spans satin, chiffon, structured tulle, and sequined fabric, depending on the style.

Yes — every long prom dress is available in custom sizing, from petite to plus.