Designed to define shape & imbue elegance. The Sienna Gown features a strapless, fitted bustier complete with internal boning for additional structure falling to a relaxed slim line silhouette. The Sienna features intentional draping to flatter the female form and replicate effortless movement across the silhouette. This silhouette is fastened by an invisible zip closure and features a back leg split for a balanced shape.

Runs true to size, we recommend taking your usual size.
Model is 5'9 and wears a RG 1 = US 4 = AU/UK 8. 

  • Fitted bodice with internal boning
  • A slim fit silhouette This fabric has stretch
  • Adjustable elastic waist tape to cinch in the waist Silicone taping on back neckline for a firm hold on the body
  • This style can be hemmed
  • Strapless with peaked neckline

Stretch Taffeta
45% Nylon 50% Polyester 5% Elastane

Dry Clean Only
See sewn in label for further care instructions

Standard Shipping - Complimentary 

  • USA - UPS ground 1-5 business days 
  • Rest Of World - Fedex Economy 7-10  business days 

Express Shipping - $20

  • USA - UPS 2nd Day Air 2 business days 
  • Rest Of World - Fedex Priority 3-7 business days 

Next Day Day Delivery - $25 

  • USA - UPS Next Day Air 

Returns
Rachel Gilbert accepts returns for online orders on all full price items within 7 days of receiving your order. Items returned outside of this period will not be accepted unless deemed faulty. 

Please ensure that before initiating your return that your return meets the following criteria (unless deemed faulty):

  • Order has been received within 7 days
  • Item is in new and unused condition
  • Item has all original tags attached
  • We do not accept returns on sale items. All sale items are final sale
Next day delivery options available at checkout for customers in the United States.
Complimentary shipping options available. We'll cover the cost of all orders shipped: duties & taxes paid.

Pay Later Options

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Repay in 4 instalments fortnightly, interest-free.

The maximum purchase amount is $1,200.

Learn more about Afterpay

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Repay in 4 instalments fortnightly, interest-free.

The maximum purchase amount is $1,200.

Learn more about Klarna.

Size chart

Size conversion

Runs true to size, we recommend taking your usual size.

Model is 5'10 and wears a Rachel Gilbert Size 1
[ US 4 | EU 34 | FR 36 ].

Size:
Size (RG) Size (AU) Size (US) Size (EU) Size (FR) Size (IT) Size (UK) Bust (CM) Waist (CM) Hips (CM)
XXS 00 4 0 30 32 36 4 79 58 86
XS 0 6 2 32 34 38 6 84 63 91
S 1 8 4 34 36 40 8 89 68 96
M 2 10 6 36 38 42 10 94 73 101
L 3 12 8 38 40 44 12 99 78 106
XL 4 14 10 40 42 46 14 104 83 111
XXL 5 16 12 42 44 48 16 109 88 116
XXXL 6 18 14 44 46 50 18 114 93 121