SIR SIR Siella ruffled gown
SIR SIR Siella ruffled gown - 1
SIR SIR Siella ruffled gown - 2
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SIR Siella ruffled gown

SIR

$750.00

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Free U.S. shipping on Mytheresa orders over $400. Sold and fulfilled by Mytheresa, with current pricing, availability, and delivery details confirmed at checkout. shipping and returns information

Product Insights & Style Tips

The SIR Siella ruffled gown pulls you into midnight mood with a clean, high-gloss attitude. In a 90/10 nylon elastane weave, the fabric drapes with just the right amount of stretch and a sleek, second-skin silhouette. The lining mirrors the outer knit for a smooth glide against skin, while a concealed side zip keeps the line uninterrupted and a side slit hints at easy movement.

On the body, the gown skims with just enough ease to move through a night out. The concealed side zip keeps the front clean, while the side slit adds movement and drama. The stretch knit helps it sit smoothly across the torso and hips, so it layers nicely with a tailored jacket or a delicate shawl for shifting settings, from a seated dinner to standing receptions. Care is dry clean only.

SIR leans into a modern couture mood where clean lines meet subtle drama. The Siella gown embodies that code, a piece that signals polish without shouting. Style it with a slim heel and a sleek clutch, then add a sharply tailored jacket for cooler nights or a more editorial city vibe.

Materials / Fabrication

  • Material: 90% nylon, 10% elastane
  • Lining: 90% nylon, 10% elastane
  • Closure: concealed zipped side
  • Side slit
  • Designer color name: Black

Recommended Care

  • Dry clean only

Fit Notes

  • Concealed side zip closure.
  • Side slit detail.
  • Main fabric is 90% nylon, 10% elastane.
  • Lining is 90% nylon, 10% elastane.
SIR SIR Siella ruffled gown

How To Wear It

  • Choose shoes that balance the gown's side slit.
  • Carry a bag to keep the silhouette streamlined and the ruffle detail in focus.
  • Consider a jacket for a subtle outer layer.

About SIR

SIR The Label is an Australian fashion label with a sustainable background. The cult Australian fashion label was founded by Sophie Coote and Nikkie Campell in 2014, delivering socially conscious minimalism with a free-spirited edge since its inception. Think 70’s, 80’s inspired silhouettes with a beachy aesthetic that can be worn whether you’re beach side or hitting the town. Shop the latest collection from SIR The Label, ranging in dresses, shirts, skirts, pants and swimwear.