SIR the Label Dresses: The Complete Guide to Gowns, Slips and Minis

SIR the Label dresses are the core of the collection: bias cut silk slips, long silk gowns, linen minis for summer and printed maxis that match the swimwear. This guide sorts the current SIR. dresses on Coveti by length and fabric, with the price and the fit note for each, so you can find the right one in a few minutes.

The SIR. dress in one paragraph

Most SIR. dresses are cut on the bias in silk and silk viscose blends, and designed to sit slightly off the body. That gives them a fluid line that skims rather than clings. Many have a removable slip lining, so you can wear them sheer over swimwear in summer and lined for evening. The brand describes almost every dress as fitting true to size. On Coveti, a SIR 1 is a UK 8.

Evening gowns

SIR. gowns are long, quiet and cut to move. They are the dresses to buy for weddings, galas and long dinners.

• Flure Gown in Black, $1,410. A long sleeve silk maxi with a low plunge back, a side split to mid thigh and an adjustable tie at the waist. The most dramatic gown in the edit.
• Isla Cowl Back Gown in Navy, $1,160. A straight neckline at the front and a deep cowl at the back, in a matte crepe silk.
• Lysia Halter Gown in Black, $1,160. Bias cut silk and viscose with a low back and delicate floral embellishment on the straps.
• Olenna Twist Low Back Gown in Charcoal, $830. A heavyweight viscose gown with twisted straps and a twisted cowl at the back. Also in Dusty Blue.
• Noria Tiered Gown in Powder Blue, $1,120. Silk with lace placed on the bodice and pleated sheer chiffon panels below.
• Arla Halter Gown in Cobalt, $1,060. Underwire at the bust, an adjustable neck tie and a split to mid thigh. The brightest gown of the season.

For the bias silk and lace styles, see our separate guide to the SIR Aries collection.

Maxi dresses

• Sona Maxi Dress in Geo Scape, $1,020. Bias cut silk with a high cowl neck, a racer back with a keyhole and sheer side panels.
• Gabriete Tie Shoulder Dress in Bitter Chocolate, $1,120. Silk satin with ties at the shoulder and the waist. Also in Burnt Orange.
• Seameadow Bias Dress in Black, $870. Silk crepe with a draped neck, gathers at the waist and a flounce sleeve. Also in Moss.
• Mireli Scarf Dress in Rose Parquet, $910. A long sleeve printed dress with a low V neck and a tie at the front.
• Phillipa Slip Dress in Eira Midnight, $870. A silk and viscose slip with twisted contrast straps and a low scooped back.
• Ayla Tie Back Maxi Dress in Bone, $780. A linen blend with a square neck, contrast herringbone straps and a tie at the back. The easiest summer maxi in the edit.
• Viroa Knit Maxi Dress in Gold Metallic, $720. A rayon knit halter with a metallic look and a low scooped back.

Midi dresses

• Alessandra Midi Dress in Ivory, $930. Linen with tonal embroidered motifs picked out in beading, a twist at the front and a side split.
• Mireli Slip Dress in Rose Parquet, $720. A bias cut print slip with contrast panels at the underbust.
• Marlowe Layered Midi Dress in Monochrome Stripe, $900. 100% silk with contrast striped panels, fully lined.
• Sabah Cross Back Midi Dress in Ivory, $720. A ribbed knit with beading across the back.
• Ellinor Midi Dress in Light Beige, $580. A cotton crochet midi with a low open back. A beach cover up that works at lunch too.

Mini dresses

• Astrine Tailored Mini Dress in Coffee, $1,120. A structured suiting mini with balloon sleeves and buttons through the front.
• Yasmine Mini Dress in Black, $780. Heavyweight silk, bias cut, with a cowl neck and an open back.
• Ayana Knit Mini Dress in Black, $930. Double faced extra fine merino, gathered at the waist, with a high V neck.
• Arisa Mini Dress in Polka Dot Nero, $720. A silk bubble mini lined in mesh. Also in Watermelon.
• Favi Twist Mini Dress in Light Sage, $680. Linen with an off shoulder neckline and twisted straps.
• Sol Halter Mini Dress in Ivory, $870. A form fitting halter with tucks through the body.
• Almara Wrap Halter Mini Dress in Espresso Stripe, $720. SIR. calls this halter wrap its signature silhouette.

Shirt dresses

SIR. makes the shirt dress in silk and in cotton. The Sorrento Shirt Dress in Black, $830, is silk with a satin finish, a scarf inspired border print, a concealed placket and a tie at the waist. The Zaria Shirt Dress in Ivory, $680, is crisp cotton with engraved logo buttons in a pearl finish. The Phillipa Shirt Dress, $830, is the printed version.

How to choose

Choose silk for evening and for travel, because it packs small and drops its creases quickly when hung. Choose linen and cotton for heat. Choose a knit dress such as the Ayana for colder months and for the office. If you want a dress that works across all three, the Seameadow in black is the one.

For dress codes, see our SIR wedding guest guide. For sizes, see the SIR size guide. And for the label’s background, read who is SIR the Label.

Editor’s note: buy a SIR. dress for the cut, then wear it more often than you planned. These are dresses that look as right at lunch as they do at a party.

Frequently asked questions

How much is a SIR the Label dress?

On Coveti, SIR. dresses start at $580 for the Ellinor crochet midi and reach $1,410 for the Flure Gown. Most silk dresses sit between $720 and $1,160.

Are SIR the Label dresses silk?

Many are. The gowns and slips are mostly 100% silk, with some silk and viscose blends, and the summer dresses use linen, cotton and crochet.

Do SIR dresses fit true to size?

Yes. SIR. describes almost every dress as fitting true to size. Bias cut styles are designed to skim the body, so choose the larger size if you are between two.

Do SIR dresses come with a slip?

Several do. The Estella, Lisander and Marlowe dresses come with a removable slip lining, so they can be worn sheer and lined.

Which SIR dress is best for a wedding?

For an evening wedding, the Isla Cowl Back Gown, the Lysia Halter Gown and the Aries gowns. For a day wedding, the Gabriete Tie Shoulder Dress in Burnt Orange and the Mireli Scarf Dress in Rose Parquet.