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Bias-cut silk satin dress. · Fixed shoulders straps · Straight neck · Low back · Full stretch crepe lining Supplier color: Black

SIR. Black Editta Maxi Dress

Semi-sheer plain-woven cotton dress. · Crewneck · Slit at front hem · Balloon sleeves · Elasticized cuffs · Concealed zip closure at back Supplier color: Black

SIR. Black Pascal Maxi Dress

Semi-sheer cotton and nylon-blend crepe dress. · Halter strap at round neck · Cutout at chest · Unlined Supplier color: Ivory

SIR. White Emmeline Maxi Dress

Rib knit stretch viscose-blend dress. · Crewneck · Cutouts at waist · Slit at side-seam Supplier color: Ivory

SIR. White Celena Maxi Dress

Open crochet knit cotton-blend dress. · V-neck · Button closure · Tortoiseshell hardware Supplier color: Chocolate

SIR. Brown Dulcie Longline Maxi Dress

Plain-woven viscose and linen-blend dress. · Layered and wrapped construction · Spread collar · Plunging V-neck · Integrated self-tie straps at front · Wrap skirt with button fastening at waist · Unlined Supplier color: Black

SIR. Black Clemence Wrap Maxi Dress

Silk satin dress. Graphic printed throughout. · Fixed shoulder straps · Scoop neck · Vented front hem Supplier color: Merce abstract print

SIR. Blue Esme Maxi Dress

Semi-sheer plain-woven cotton dress. · Tiered construction · Crewneck · Concealed zip closure at back Supplier color: Ivory

SIR. White Pascal Sleeveless Maxi Dress

Handcrafted silk satin dress in black. · Asymmetric neckline · Vent at side-seam · Silk crêpe lining Supplier color: Black

SIR. Black Julien Slip Maxi Dress

Handcrafted silk satin dress. · Round neck · Vented front hem · Button closure at back · Unlined Supplier color: Black

SIR. Black Soleil Maxi Dress

Semi-sheer cotton and nylon-blend crepe dress. · Halter strap at round neck · Cutout at chest · Unlined Supplier color: Black

SIR. Black Emmeline Maxi Dress

Handcrafted rib knit cotton dress. · Spread collar · Button closure Supplier color: Black

SIR. Black Enes Maxi Dress

Handcrafted rib knit viscose and nylon-blend dress. · Round neck · Racerback · Graphic hardware at fixed shoulder strap · Open back · Unlined Supplier color: Chocolate

SIR. Brown Aude Maxi Dress

Rib knit stretch viscose-blend dress. · Crewneck · Cutouts at waist · Slit at side-seam Supplier color: Black

SIR. Black Celena Maxi Dress

Bias-cut silk satin dress. · Fixed shoulder straps · Scoop neck · Slit at front hem · Unlined Supplier color: Black

Sleeveless plain-woven silk long dress in black. Elasticized trim throughout. Crewneck collar. Criss-crossing shoulder straps at open back. Tonal crêpe lining. Partially lined. Supplier color: Black

SIR. Black Vivienne Maxi Dress

Chocolate brownRibbed knit constructionCrew neckLong sleevesStriped flared skirt with sheer detailingFront slitFloor length

SIR. Brown Sylvie Ribbed Long Sleeved Maxi Dress

Cobalt blue and whiteMade with cotton and silkSignature 'Merce' abstract printGathered round neckShort puff sleevesCut-out detail at the front with drawstring edgesConcealed rear zip fasteningStraight hem

SIR. Blue Vivi Abstract Print Maxi Dress

Black and whiteMade from stretch-infused fabricScoop neck with reversible high backAsymmetric front with double strap detailSleevelessCut-out detailing at the shoulder and waistContrast bind trimsStraight hem

SIR. Black Evalina Cut-Out Maxi Dress

BlackSemi-sheer knit constructionMade from stretch-infused cottonAsymmetric scoop neckHalterneck self-tie fasteningLong sleevesStraight hem

SIR. Black Emmeline Halterneck Maxi Dress

This SIR. Constantine floral maxi dress has been designed for a slim fit. It features cutouts at the sides of the waist and is detailed with a ring at the centre. Ever since we debuted in this dress, we’ve been receiving compliments Constantine-ly.Tea green with brown and yellow floral patternRound neckSleevelessGathered detailing with ring hardwareSide zip fasteningStraight hemAnkle-lengthPOSITIVELY CONSCIOUS: This Planet Conscious product contains at least 50% eco-materials, which are independently certified as or widely recognised for having a lower environmental impact..

SIR. Green Constantine Floral Maxi Dress

Vivi abstract-print puff-sleeve maxi dress from SIR. featuring blue/white, cotton-silk blend, abstract pattern print, round neck, short puff sleeves, cut-out detailing, drawstring waist, concealed rear zip fastening and ankle-length.

SIR. Vivi abstract-print puff-sleeve maxi dress

Dion gathered maxi dress from SIR. featuring gathered detailing, cut-out detailing, round neck, short sleeves, flared, long length, straight hem, white and cotton.

SIR. Dion gathered maxi dress

Constantine floral-print maxi dress from SIR. featuring multicolour, ramie, floral print, cut-out detailing, ring hardware detailing, round neck, sleeveless, side zip fastening and maxi. POSITIVELY CONSCIOUS: This Planet Conscious product contains at least 50% eco-materials, which are independently certified as or widely recognised for having a lower environmental impact..

SIR. Constantine floral-print maxi dress

Vivi floral-print maxi dress from SIR. featuring all-over floral print, cut-out detailing, front tie fastening, round neck, short puff sleeves, flared skirt, long length, blue/white and cotton-silk blend.

SIR. Vivi floral-print maxi dress

Francesca shirred maxi dress from SIR. featuring butter yellow, linen/flax, tie-fastening straps, square neck, shirred panel, smocked waist and drop waist. Conscious: This item contains at least 50% low-impact materials, which are certified or widely recognised as having a lower environmental impact..

SIR. Francesca shirred maxi dress

With its timeless polka-dot print and alluring waist cutout detailing, the Vivi maxi dress from SIR is a hit at every warm-season event. Made from cotton and silk, it's shaped with an asymmetric neckline.

SIR Vivi polka-dot cotton and silk maxi dress

Saunter through the summer months in style with SIR's floral Bonita maxi dress. Made from lightweight, semi-sheer silk and linen with a light sheen, it's shaped with puff sleeves, a fitted waist, and elasticated, adjustable cutout back.

SIR Bonita floral silk and linen maxi dress

We've found the perfect white summer dress in the Mayra design from SIR. Made from breathable linen, it has a wonder-shoulder neckline and breezy cutouts at the waist, which create a two-piece illusion and are threaded by chords.

SIR Mayra one-shoulder maxi dress

Allegra floral-print shirred maxi dress from SIR. featuring rust red, ramie, shirred panel, all-over floral print, embroidered design, frilled high neck, balloon sleeves, elasticated cuffs, concealed rear zip fastening and maxi.

SIR. Allegra floral-print shirred maxi dress

Allegra shirred maxi dress from SIR. featuring rust red, ramie, all-over floral print, shirred panel, frilled high neck, short sleeves, concealed rear zip fastening and maxi.

SIR. Allegra shirred maxi dress

Lucelia cut-out maxi dress from SIR. featuring red, cotton-silk blend, cut-out detailing, spaghetti straps, square neck, rear tie fastening and maxi.

SIR. Lucelia cut-out maxi dress

Pascal semi-sheer maxi dress from SIR. featuring black, cotton, semi-sheer construction, panelled design, round neck, sleeveless, concealed rear zip fastening and maxi.

SIR. Pascal semi-sheer maxi dress

Amar pleated maxi dress from SIR. featuring black, linen/flax, knife-pleat design, round neck, long sleeves, buttoned cuffs, self-tie fastening and maxi.

SIR. Amar pleated maxi dress

Bonita puff-sleeve maxi dress from SIR. featuring multicolour, linen-silk blend, all-over floral print, high neck, short puff sleeves, cut-out detailing, self-tie fastening and full lining.

SIR. Bonita puff-sleeve maxi dress

draped-neck maxi dress from SIR. featuring white, linen blend, draped detailing, side slit, drop shoulder and long sleeves.

SIR. draped-neck maxi dress

Dulcie button-up maxi dress from SIR. featuring chocolate brown, cotton blend, crochet panelling, semi-sheer construction, V-neck and front button fastening.

SIR. Dulcie button-up maxi dress

Francesca shirred maxi dress from SIR. featuring multicolour, linen/flax, shirred effect, all-over floral print, ruffled detailing, square neck, sleeveless and flared hem.

Black cotton Ilkin cut-out maxi dress from SIR. featuring draped detailing, cut-out detailing, round neck, side lace-up fastening, sleeveless, A-line skirt, straight hem and ankle-length.

SIR. Ilkin cut-out maxi dress

Lucelia cut-out maxi dress from SIR. featuring black, cotton-silk blend, maxi, spaghetti straps, halterneck tie fastening, sleeveless, side slit, fitted waistline, rear tie fastening, cut-out detailing and open back.

Amar pleated maxi dress from SIR. featuring ivory white, linen/flax, knife-pleat design, round neck, long sleeves, buttoned cuffs, self-tie fastening and maxi.

Chic and versatile, SIR's Dulcie maxi dress is an easy option for warm-weather attire. The long-sleeve design is crocheted from a cotton blend, featuring a relaxed fit and a front side slit.

SIR Dulcie cotton-blend maxi dress

SIR's Celena maxi dress arrives exclusively at Mytheresa in white. Featuring draped details at the waist, it's made from a ribbed-knit that ensures a figure-hugging silhouette.

SIR Celena ribbed-knit maxi dress

Look to SIR for the perfect dress to wear on balmy summer days: the Allegra design is made from lightweight ramie to a fluid, longline silhouette, featuring ruffle trims and daring cutouts at the bodice.

SIR Allegra ramie maxi dress

Look to SIR for clean, minimalistic silhouettes like the Dion maxi dress. Made from crisp cotton poplin in black, the sleeveless style features an elasticated hem and a cutout at the waist.

SIR Dion cutout cotton poplin maxi dress

The Alexandre maxi dress from Sir speaks to effortless vacationwear. It's made from crisp linen with shoulder ties, a knotted bodice and cutout midriff.

SIR Alexandre linen maxi dress

Switch up your dress rotation with the Aya maxi dress from SIR. The semi-sheer, ribbed-knit style has a fitted silhouette and features a waist cutout with an adjustable drawstring,

SIR Aya semi-sheer maxi dress

The Allegra maxi dress from SIR is made from floral printed ramie. It features an elegant high neckline, capped sleeves, and a flattering shirred waist with a tiered skirt.

SIR Allegra floral ramie maxi dress

Perfectly primed for summery days, SIR's Lucelia maxi dress is made from airy cotton and silk. It's shaped with ruched waist paneling, elasticated crossover straps at the open-cut back, and a self-tie belt.

SIR Lucelia cotton and silk maxi dress

This ruffled, airy maxi dress from SIR is printed with vintage-style florals all over. It's cut out at the sides and back and is made from a silk-fused cotton fabric.

SIR Floral cutout cotton and silk maxi dress

This maxi dress from SIR is accented with an alluring elasticated circular cutout with a corded tie at the left waist. It's cut in Italian cotton poplin and has a round, gathered neckline.

SIR Cutout maxi dress

The Enes maxi dress from SIR is an essential for transeasonal styling. Made from cotton, it has a fitted silhouette with a point collar and a ribbed finish.

SIR Enes ribbed-knit cotton maxi dress

In airy linen, the Wilma design from Sir is the perfect throw-on-and-go dress for summer. Notice how the waist cutout on the side is finished with topstitching, just like the crewneck and self-tie belt.

SIR Vilma cutout linen maxi dress

SIR's Evalina maxi dress is made from a thick knit to a figure-hugging silhouette, with contrasting trims and sophisticated cutout detailing. Wear it with its scoop neckline or backwards for a high-neck style.

SIR Evalina cutout knit maxi dress

SIR's Bonita maxi dress can easily be dressed up or down for a myriad of occasions. It's made from linen and silk with a floral motif, featuring an elasticated bodice, a V-neck, and cross-back straps.

SIR Bonita linen and silk maxi dress

SIR's Celena maxi dress arrives exclusively at Mytheresa in black. Featuring draped details at the waist, it's made from a ribbed-knit that ensures a figure-hugging silhouette.

Look to SIR for clean, minimalistic silhouettes like the Dion maxi dress. Made from crisp cotton poplin in white, the sleeveless style features an elasticated hem and a cutout at the waist.

From its breathable linen composition to its open back, the Alena maxi dress from SIR has everything a summer staple needs. It has an elasticated waistband for something of a more feminine silhouette.

SIR Alena open-back linen maxi dress

Made from a lightweight cotton and silk blend with an abstract print, SIR's Vivi maxi dress will suit a myriad of occasions. It features a ruffle-trimmed plunging neckline and alluring cut-outs at the bodice and back.

SIR.Black Editta Maxi Dress

SIR.Black Pascal Maxi Dress

SIR.White Emmeline Maxi Dress

SIR.White Celena Maxi Dress

SIR.Brown Dulcie Longline Maxi Dress

SIR.Black Clemence Wrap Maxi Dress

SIR.Blue Esme Maxi Dress

SIR.White Pascal Sleeveless Maxi Dress

SIR.Black Julien Slip Maxi Dress

SIR.Black Soleil Maxi Dress

SIR.Black Emmeline Maxi Dress

SIR.Black Enes Maxi Dress

SIR.Brown Aude Maxi Dress

SIR.Black Celena Maxi Dress

SIR.Black Editta Maxi Dress

SIR.Black Vivienne Maxi Dress

SIR.Brown Sylvie Ribbed Long Sleeved Maxi Dress

SIR.Blue Vivi Abstract Print Maxi Dress

SIR.Black Evalina Cut-Out Maxi Dress

SIR.Black Emmeline Halterneck Maxi Dress

SIR.Green Constantine Floral Maxi Dress

SIR.Vivi abstract-print puff-sleeve maxi dress

SIR.Dion gathered maxi dress

SIR.Constantine floral-print maxi dress

SIR.Vivi floral-print maxi dress

SIR.Francesca shirred maxi dress

SIR.SIR Vivi polka-dot cotton and silk maxi dress

SIR.SIR Bonita floral silk and linen maxi dress

SIR.SIR Mayra one-shoulder maxi dress

SIR.Allegra floral-print shirred maxi dress

SIR.Allegra shirred maxi dress

SIR.Lucelia cut-out maxi dress

SIR.Pascal semi-sheer maxi dress

SIR.Amar pleated maxi dress

SIR.Bonita puff-sleeve maxi dress

SIR.draped-neck maxi dress

SIR.Dulcie button-up maxi dress

SIR.Francesca shirred maxi dress

SIR.Ilkin cut-out maxi dress

SIR.Lucelia cut-out maxi dress

SIR.Francesca shirred maxi dress

SIR.Amar pleated maxi dress

SIR.SIR Dulcie cotton-blend maxi dress

SIR.SIR Celena ribbed-knit maxi dress

SIR.SIR Allegra ramie maxi dress

SIR.SIR Dion cutout cotton poplin maxi dress

SIR.SIR Alexandre linen maxi dress

SIR.SIR Aya semi-sheer maxi dress

SIR.SIR Allegra floral ramie maxi dress

SIR.SIR Lucelia cotton and silk maxi dress

SIR.SIR Floral cutout cotton and silk maxi dress

SIR.SIR Cutout maxi dress

SIR.SIR Enes ribbed-knit cotton maxi dress

SIR.SIR Vilma cutout linen maxi dress

SIR.SIR Evalina cutout knit maxi dress

SIR.SIR Bonita linen and silk maxi dress

SIR.SIR Celena ribbed-knit maxi dress

SIR.SIR Dion cutout cotton poplin maxi dress

SIR.SIR Alena open-back linen maxi dress

SIR.SIR Vivi printed cotton and silk maxi dress