Finding true plus-size vintage from the 1960s is like finding a unicorn—and this one is a beauty. Made from the era’s famous “Arnel” triacetate jersey, this dress features permanent micro-pleating (crystal pleats) that gives it a fantastic, swingy texture that stretches and moves with you.

The silhouette is a classic 60s “Tent” or “Trapeze” cut, hanging free from the shoulders with massive volume through the body. It features a high neck with a charming white ruffled collar. The vibrant royal blue color is deeply saturated and looks amazing in person.

Fit Note: This dress is essentially “Free Size” through the waist and hips due to the tent cut. It measures roughly 57 inches around the bust/body, making it a comfortable fit for modern Plus Sizes (2X, 3X, potentially 4X).

Condition Report – SOLD AS IS:

  • Mending Needed: The white ruffle collar has come unstitched from the neckline in a section (see photos). This is a clean separation on the seam, not a tear in the fabric, and is a simple fix for anyone with a needle and thread.

  • Stains: There is some light discoloration/makeup residue on the white collar (unwashed).

  • Fabric: The blue Arnel fabric is in excellent condition with no holes or pulls noted.

Measurements (Taken Flat & Doubled):

  • Bust / Width: Approx. 28.5 inches flat -> 57 inches around (Free fit)

  • Length: 40 inches (shoulder to hem)

  • Shoulders: Approx. 16-17 inches (raglan/undefined style)

  • Modern Size Estimate: Plus Size 2X / 3X / 4X (Relies on shoulder fit)

Key Features:

  • Material: Arnel Triacetate Knit.

  • Style: Mod Tent Dress / Swing Dress.

  • Detail: Micro-Pleated Texture.

  • Size: Rare Vintage Plus Size.