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Long Prom Dresses

Elongated lengths of elegant long prom dresses mark the 2025 season with unparalleled aplomb. The long prom dress appears in a series of luxury textiles, spotlighting our dedication to premium design. Expect ethereal textiles that layer for exaggerated depth, such as tulle, organza, chiffon, voile, georgette, and chiffon, alongside slinky styles that drape with fluid mastery — including satin, silk, lace, jersey, linen, and taffeta. You’ll also find contouring pieces that create a bespoke fit from form-fitting jersey, jacquard, and the four-way support of our iconic Compact Stretch. The monochromatic depth of the long black prom dresses appears alongside a considered palette of color, with long red prom dresses, bold brights, regal reds, rich jewel tones, and refined neutrals aplenty.
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529 products

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favourite
Pleated Slub Organdie Peplum Woven Maxi Dress
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KarenMillen

Pleated Slub Organdie Peplum Woven Maxi Dress

  • Design: Plain
  • Fabric: Woven
  • Length: Maxi
$359.00
favourite
Petite Lilly Print Twill Collared Maxi Dress
Petite
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KarenMillen

Petite Lilly Print Twill Collared Maxi Dress

  • Design: Print
  • Length: Maxi
  • Style: Maxi Dress
$289.00
favourite
Floral Tulle Balloon Sleeve Plunge Woven Maxi Dress
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KarenMillen

Floral Tulle Balloon Sleeve Plunge Woven Maxi Dress

  • Detail: Floral
  • Length: Maxi
  • Style: Maxi Dress
$309.00
favourite
Chiffon Floral Print Strappy Woven Maxi Dress
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KarenMillen

Chiffon Floral Print Strappy Woven Maxi Dress

  • Design: Placement Print
  • Fabric: Woven
  • Neckline: Scoop
$319.00
favourite
Fringed Beaded Halter Neck Woven Maxi Dress
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KarenMillen

Fringed Beaded Halter Neck Woven Maxi Dress

  • Detail: Fringed
  • Fabric: Woven
  • Sleeve length: Sleeveless
$789.00
light-blue color cobalt color
favourite
Viscose Blend Slinky Drape Plunge Back Knit Maxi Dress
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KarenMillen

Viscose Blend Slinky Drape Plunge Back Knit Maxi Dress

  • Detail: Plain
  • Fabric: Viscose
  • Neckline: Round Neck
$229.00
black color ivory color violet color grey color
favourite
Stripe Cotton Mix Woven Maxi Halter Dress
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KarenMillen

Stripe Cotton Mix Woven Maxi Halter Dress

  • Detail: Plain
  • Fabric: Cotton
  • Length: Maxi
$309.00
multi color mono color
favourite
Stripe Fabric Detail Fluid Halter Maxi Dress
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KarenMillen

Stripe Fabric Detail Fluid Halter Maxi Dress

  • Length: Maxi
  • Neckline: High Neck
  • Sleeve length: Sleeveless
$139.00 $309.00
red color black color cobalt color
favourite
Floral Twill Collared Maxi Dress
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KarenMillen

Floral Twill Collared Maxi Dress

  • Neckline: Collared
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$159.00 $319.00
favourite
Polka Dot Tulle Layered Off The Shoulder Maxi Dress
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KarenMillen

Polka Dot Tulle Layered Off The Shoulder Maxi Dress

  • Design: Polka dot
  • Detail: All Over Print
  • Length: Maxi
$289.00
ivory color navy color
favourite
Crinkle Georgette Floral Print Halter Neck Woven Maxi Dress
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KarenMillen

Crinkle Georgette Floral Print Halter Neck Woven Maxi Dress

  • Design: Floral
  • Detail: Crinkle
  • Neckline: Halterneck
$409.00
favourite
Tulle Layered Long Sleeve Maxi Dress
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KarenMillen

Tulle Layered Long Sleeve Maxi Dress

  • Detail: Plain
  • Length: Maxi
  • Neckline: V Neck
$159.00 $319.00
favourite
Petite Lilly Pleated Yoryu Crinkle Maxi Dress
Petite
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KarenMillen

Petite Lilly Pleated Yoryu Crinkle Maxi Dress

  • Detail: Pleated
  • Length: Maxi
  • Neckline: One Shoulder
$339.00
favourite
Compact Stretch Viscose Bandeau Maxi Dress
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KarenMillen

Compact Stretch Viscose Bandeau Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$209.00 $409.00
buttermilk color fuchsia color
favourite
Satin Twill Draped Waist Structured Tailored Maxi Dress
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KarenMillen

Satin Twill Draped Waist Structured Tailored Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$149.00 $359.00
magenta color pale-blue color green color ivory color
favourite
Textured Rosette Prom Maxi Dress
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KarenMillen

Textured Rosette Prom Maxi Dress

  • Fabric: Polyester
  • Length: Maxi
  • Sleeve length: Sleeveless
$149.00 $359.00
favourite
Blurred Orchid Twill Collared Maxi Dress
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KarenMillen

Blurred Orchid Twill Collared Maxi Dress

  • Design: All Over Print
  • Detail: All Over Print
  • Style: Maxi Dress
$149.00 $289.00
favourite
Viscose Blend Slinky Sheer Lace Detail Knit Maxi Dress
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KarenMillen

Viscose Blend Slinky Sheer Lace Detail Knit Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Knitted Dress
$289.00
navy color ivory color burgundy color orange color mono color
favourite
Viscose Satin Crepe Woven Maxi Dress
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KarenMillen

Viscose Satin Crepe Woven Maxi Dress

  • Design: Plain
  • Detail: Plain
  • Length: Maxi
$209.00 $409.00
ivory color sage color pale-blue color
favourite
Crinkle Cross Front Georgette Woven Maxi Dress
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KarenMillen

Crinkle Cross Front Georgette Woven Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$309.00
lemon color pink color
favourite
Cotton Ponte Jersey Ruffle Hem Maxi Dress
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KarenMillen

Cotton Ponte Jersey Ruffle Hem Maxi Dress

  • Detail: Ruffle
  • Neckline: Scoop
  • Sleeve length: Strappy
$219.00
black color red color
favourite
Embellished One Shoulder Printed Maxi Dress
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KarenMillen

Embellished One Shoulder Printed Maxi Dress

  • Fabric: Woven
  • Length: Maxi
  • Sleeve length: Long Sleeve
$539.00
favourite
Jersey Crepe Asymmetric Neckline Maxi Dress
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KarenMillen

Jersey Crepe Asymmetric Neckline Maxi Dress

  • Length: Maxi
  • SleeveLength: Sleeveless
  • Style: Maxi Dress
$89.00 $179.00
green color mango color black color cobalt color ivory color red color
favourite
Forever Twill Woven Prom Maxi Skirt
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KarenMillen

Forever Twill Woven Prom Maxi Skirt

  • Detail: Belted
  • Fabric: Polyester
  • Length: Maxi
$179.00
red color mid-navy color ivory color navy color black color jade color mint color lemon color
favourite
Floral Applique One Shoulder Woven Maxi Dress
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KarenMillen

Floral Applique One Shoulder Woven Maxi Dress

  • Detail: Embellished
  • Length: Maxi
  • Style: Maxi Dress
$419.00 $849.00
favourite
Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress
Tall
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KarenMillen

Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress

  • Design: Plain
  • Detail: Plain
  • Style: Maxi Dress
$289.00
green color silver color
favourite
Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress
Tall
View
KarenMillen

Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress

  • Length: Maxi
  • Sleeve length: Strappy
  • Style: Maxi Dress
$149.00 $289.00
favourite
Burnout Embellished And Beaded Open Back Woven Maxi Dress
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KarenMillen

Burnout Embellished And Beaded Open Back Woven Maxi Dress

  • Neckline: V Neck
  • Sleeve length: Strappy
  • Style: Maxi Dress
$219.00 $719.00
fuchsia color aqua color
favourite
Pleated Skirt Detail Belted Maxi Dress
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KarenMillen

Pleated Skirt Detail Belted Maxi Dress

  • Design: Plain
  • Detail: Plain
  • Sleeve length: Sleeveless
$159.00 $319.00
favourite
Marble Print Mesh Plunge Strappy Detail Maxi Dress
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KarenMillen

Marble Print Mesh Plunge Strappy Detail Maxi Dress

  • Length: Maxi
  • Sleeve length: Strappy
  • Style: Maxi Dress
$99.00 $199.00
favourite
Petite Soft Tailored Halter Neck Open Back Maxi Dress
Petite
View
KarenMillen

Petite Soft Tailored Halter Neck Open Back Maxi Dress

  • Detail: Plain
  • Length: Maxi
  • Neckline: Halterneck
$319.00
green color magenta color
favourite
Soft Tailored Halterneck Open Back Maxi Dress
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KarenMillen

Soft Tailored Halterneck Open Back Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$289.00
green color pink color
favourite
Viscose Satin Floral Print Halter Neck Maxi Dress
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KarenMillen

Viscose Satin Floral Print Halter Neck Maxi Dress

  • Design: Floral
  • Detail: All Over Print
  • Style: Maxi Dress
$319.00
favourite
Beaded Embellished Full Maxi Dress
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KarenMillen

Beaded Embellished Full Maxi Dress

  • Design: Embellished
  • Sleeve length: Strappy
  • Style: Maxi Dress
$239.00 $469.00
favourite
Liquid Metallic Split Woven Maxi Dress
Tall
View
KarenMillen

Liquid Metallic Split Woven Maxi Dress

  • Detail: Crinkle
  • Neckline: Crew
  • Style: Maxi Dress
$89.00 $289.00
favourite
Fringed Asymmetric Beaded Woven Maxi Dress
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KarenMillen

Fringed Asymmetric Beaded Woven Maxi Dress

  • Detail: Fringed
  • Fabric: Woven
  • Neckline: High Neck
$359.00 $719.00
ivory color teal color
favourite
Printed Metallic Floral Woven Maxi Dress
Tall
View
KarenMillen

Printed Metallic Floral Woven Maxi Dress

  • Fabric: Woven
  • Length: Maxi
  • Style: Maxi Dress
$309.00
favourite
Crystal Applique Angel Sleeve Woven Maxi Dress
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KarenMillen

Crystal Applique Angel Sleeve Woven Maxi Dress

  • Length: Maxi
  • Sleeve length: Short Sleeve
  • Style: Maxi Dress
$349.00 $879.00
favourite
Square Neck Tailored Full Skirted Maxi Dress
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KarenMillen

Square Neck Tailored Full Skirted Maxi Dress

  • Length: Maxi
  • Sleeve length: Short Sleeve
  • Style: Maxi Dress
$359.00
red color cobalt color
favourite
Bandage Figure Form Knit Embellished Maxi Dress
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KarenMillen

Bandage Figure Form Knit Embellished Maxi Dress

  • Fabric: Woven
  • Neckline: Square
  • Sleeve length: Strappy
$309.00
magenta color ivory color
Showing 40 of 529
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