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Plus Size Birthday Dresses

Custom cuts for celebration-ready elegance, find an unforgettable birthday fit for 21st, 30th and beyond in the plus size birthday dresses edit. Offering a bespoke approach to after-dark luxury, the mini, midi and maxi silhouettes in the plus size birthday dresses collection boast premium textiles aplenty. Think tactile silhouettes that flow with plenty of silk, chiffon, mesh, leather, satin, and polished twill iterations, alongside sculpting iterations that are crafted from close-fitting knits. You’ll find plenty of ponte, structured crêpe, knitted jersey, and our industry-revered Compact Stretch — creating a contoured approach to plus size birthday outfits. Find your signature color from streamlined black, feminine pink, refined neutrals, soft pastels, and plenty of bold brights. Party-ready with dramatic touches (such as feather cuffs, shimmering sequins, bright paillettes, lace trims and intricate embellishments), find birthday dresses for women plus size below.
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favourite
Pleated Slub Organdie Peplum Woven Maxi Dress
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KarenMillen

Pleated Slub Organdie Peplum Woven Maxi Dress

  • Detail: Pleated
  • Fabric: Woven
  • Length: Maxi
$359.00
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Kimono Sleeve Embellished Maxi Dress
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KarenMillen

Kimono Sleeve Embellished Maxi Dress

  • Detail: Embellished
  • Length: Maxi
  • Sleeve length: Long Sleeve
$219.00 $539.00
favourite
Embroidered Organdie Balloon Sleeve Woven Maxi Dress
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KarenMillen

Embroidered Organdie Balloon Sleeve Woven Maxi Dress

  • Design: Embroidered
  • Fabric: Polyester
  • Sleeve length: Long Sleeve
$309.00 $609.00
favourite
Premium Embellished Cape Maxi Dress
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KarenMillen

Premium Embellished Cape Maxi Dress

  • Design: Fabric Interest
  • Fabric: Woven
  • Neckline: Crew
$849.00
favourite
Taffeta Bow Detail Woven Maxi Dress
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KarenMillen

Taffeta Bow Detail Woven Maxi Dress

  • Design: Plain
  • Fabric: Polyester
  • Length: Maxi
$169.00 $679.00
black color hot-pink color
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Feather Embellished Woven Cape Sleeve Maxi Dress
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KarenMillen

Feather Embellished Woven Cape Sleeve Maxi Dress

  • Design: Plain
  • Detail: Printed
  • Fabric: Polyester
$219.00 $879.00
taupe color raspberry color
favourite
Stretch Drapey Crepe Ruched Plunge Neck Batwing Sleeve Maxi Dress
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KarenMillen

Stretch Drapey Crepe Ruched Plunge Neck Batwing Sleeve Maxi Dress

  • Design: Plain
  • Neckline: Plunge
  • Style: Maxi Dress
$219.00
black color cobalt color
favourite
Polka Dot Tulle Plunge Balloon Sleeve Maxi Dress
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KarenMillen

Polka Dot Tulle Plunge Balloon Sleeve Maxi Dress

  • Design: Polka dot
  • Length: Maxi
  • Neckline: Plunge
$179.00 $309.00
favourite
Plus Size Foil Metallic Figure Form Angel Sleeve Knit Maxi Dress
Tall
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KarenMillen

Plus Size Foil Metallic Figure Form Angel Sleeve Knit Maxi Dress

  • Fabric: Polyester
  • Length: Maxi
  • Neckline: V Neck
$269.00
favourite
Plus Size Square Neck Tailored Full Skirted Maxi Dress
Plus
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KarenMillen

Plus Size Square Neck Tailored Full Skirted Maxi Dress

  • Design: Spots
  • Detail: Plain
  • Neckline: Square
$359.00
favourite
Archive Collection - Corset Detail Georgette Cape Woven Maxi Dress
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KarenMillen

Archive Collection - Corset Detail Georgette Cape Woven Maxi Dress

  • Detail: Corset
  • Fabric: Polyester
  • Sleeve length: Strappy
$229.00 $769.00
blue color ivory color
favourite
Twill Contrast Collared Woven Maxi Dress
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KarenMillen

Twill Contrast Collared Woven Maxi Dress

  • Fabric: Woven
  • Length: Maxi
  • Style: Maxi Dress
$289.00
favourite
Petite Viscose Blend Sheer Skirt Maxi Knit Dress
Petite
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KarenMillen

Petite Viscose Blend Sheer Skirt Maxi Knit Dress

  • Fabric: Knitted
  • Length: Maxi
  • Neckline: V Neck
$249.00
favourite
Premium Stretch Crepe Jersey V Neck Zip Detail Maxi Dress
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KarenMillen

Premium Stretch Crepe Jersey V Neck Zip Detail Maxi Dress

  • Fabric: Polyester
  • Neckline: V Neck
  • Sleeve length: Long Sleeve
$149.00 $359.00
emerald color cobalt color
favourite
Petite Soft Tailored Colour Block Detail Halter Neck Maxi Dress
Petite
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KarenMillen

Petite Soft Tailored Colour Block Detail Halter Neck Maxi Dress

  • Detail: Plain
  • Fabric: Polyester
  • Length: Maxi
$239.00 $339.00
favourite
Voile Embroidered Cutwork Balloon Sleeve Woven Maxi Dress
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KarenMillen

Voile Embroidered Cutwork Balloon Sleeve Woven Maxi Dress

  • Length: Maxi
  • Sleeve length: Long Sleeve
  • Style: Maxi Dress
$219.00 $539.00
favourite
Pleated Tiered Maxi Dress
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KarenMillen

Pleated Tiered Maxi Dress

  • Detail: Plain
  • Neckline: Bandeau
  • Style: Maxi Dress
$359.00
blue color purple color
favourite
Hotfix Studded Long Sleeve Shirt Woven Maxi Dress
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KarenMillen

Hotfix Studded Long Sleeve Shirt Woven Maxi Dress

  • Detail: Studded
  • Fabric: Woven
  • Length: Maxi
$139.00 $339.00
ivory color black color
favourite
Soft Pleated Woven Kimono Sleeve Maxi Dress
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KarenMillen

Soft Pleated Woven Kimono Sleeve Maxi Dress

  • Detail: Pleated
  • Length: Maxi
  • Sleeve length: Long Sleeve
$99.00 $249.00
favourite
Soft Tailored Side Pleated Midi Dress
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KarenMillen

Soft Tailored Side Pleated Midi Dress

  • Design: Plain
  • Fabric: Polyester
  • Style: Midi Dress
$169.00 $409.00
favourite
Petite Compact Stretch Tailored Colour Block Full Skirted Midi Dress
Petite
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KarenMillen

Petite Compact Stretch Tailored Colour Block Full Skirted Midi Dress

  • Length: Midi
  • Neckline: Crew
  • Sleeve length: Sleeveless
$169.00 $429.00
ivory color dusty-rose color
favourite
Cutwork Beaded Embroidered Woven Maxi Dress
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KarenMillen

Cutwork Beaded Embroidered Woven Maxi Dress

  • Fabric: Woven
  • Neckline: Round Neck
  • Sleeve length: Long Sleeve
$269.00 $669.00
favourite
Plus Size Crinkle Georgette Cape Blur Print Woven Maxi Dress
Plus
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KarenMillen

Plus Size Crinkle Georgette Cape Blur Print Woven Maxi Dress

  • Length: Maxi
  • Neckline: Round Neck
  • Style: Maxi Dress
$169.00 $289.00
favourite
Ruffle detail chiffon belted woven maxi dress
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KarenMillen

Ruffle detail chiffon belted woven maxi dress

  • Design: Plain
  • Detail: Ruffle
  • Neckline: Round Neck
$129.00 $319.00
favourite
Embellished Ruffle Strappy Woven Maxi Dress
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KarenMillen

Embellished Ruffle Strappy Woven Maxi Dress

  • Fabric: Polyester
  • Length: Maxi
  • Sleeve length: Strappy
$189.00 $629.00
favourite
Plus Size Foil Metallic Figure Form Bandage Angel Sleeve Knit Maxi Dress
Tall
Plus
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KarenMillen

Plus Size Foil Metallic Figure Form Bandage Angel Sleeve Knit Maxi Dress

  • Design: Plain
  • Neckline: V Neck
  • Style: Maxi Dress
$169.00 $289.00
silver color hot-pink color
favourite
Plus Size Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress
Tall
Plus
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KarenMillen

Plus Size Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress

  • Length: Maxi
  • Sleeve length: Strappy
  • Style: Maxi Dress
$139.00 $289.00
blush color pale-blue color
favourite
Plus Size Cotton Poplin Pleated Maxi Dress
Plus
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KarenMillen

Plus Size Cotton Poplin Pleated Maxi Dress

  • Fabric: Woven
  • Length: Maxi
  • Sleeve length: Sleeveless
$229.00 $319.00
favourite
Plus Size Premium Viscose Linen Tailored Belted Full Skirted Midi Dress
Plus
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KarenMillen

Plus Size Premium Viscose Linen Tailored Belted Full Skirted Midi Dress

  • Detail: Plain
  • Length: Midi
  • Sleeve length: Sleeveless
$339.00 $489.00
favourite
Plus Size Crystal Embellished Woven Plunge Detail Maxi Dress
Plus
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KarenMillen

Plus Size Crystal Embellished Woven Plunge Detail Maxi Dress

  • Design: Embellished
  • Length: Maxi
  • Neckline: Plunge
$389.00 $649.00
favourite
Ombre Floral Soft Pleated Woven Maxi With Cape Detail
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KarenMillen

Ombre Floral Soft Pleated Woven Maxi With Cape Detail

  • Design: Floral
  • Fabric: Polyester
  • Style: Maxi Dress
$109.00 $359.00
favourite
Scattered Floral Balloon Sleeve Pleated Crinkle Cut Out Woven Maxi Dress
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KarenMillen

Scattered Floral Balloon Sleeve Pleated Crinkle Cut Out Woven Maxi Dress

  • Design: Floral
  • Detail: All Over Print
  • Fabric: Polyester
$109.00 $359.00
favourite
Petite Taffeta Rosette Neck Tailored Pleat Gathered Maxi Dress
Petite
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KarenMillen

Petite Taffeta Rosette Neck Tailored Pleat Gathered Maxi Dress

  • Fabric: Polyester
  • Length: Maxi
  • Neckline: Asymmetric
$219.00 $719.00
blush color pale-blue color
favourite
Petite Soft Pleated Woven Kimono Sleeve Maxi Dress
Petite
View
KarenMillen

Petite Soft Pleated Woven Kimono Sleeve Maxi Dress

  • Detail: Pleated
  • Fabric: Woven
  • Style: Maxi Dress
$149.00 $289.00
favourite
Petite Devoure One Shoulder Woven Maxi Dress With Trim Detail
Petite
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KarenMillen

Petite Devoure One Shoulder Woven Maxi Dress With Trim Detail

  • Detail: All Over Print
  • Fabric: Woven
  • Sleeve length: Strappy
$199.00 $339.00
favourite
Feather Crystal Embellished Maxi Dress
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KarenMillen

Feather Crystal Embellished Maxi Dress

  • Design: Embroidered
  • Length: Maxi
  • Style: Midi Dress
$229.00 $759.00
favourite
Plus Size Floral Print Twill Midi Dress
Plus
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KarenMillen

Plus Size Floral Print Twill Midi Dress

  • Design: Floral
  • Sleeve length: Short Sleeve
  • Style: Midi Dress
$229.00
favourite
Plus Size Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress
Tall
Plus
View
KarenMillen

Plus Size Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress

  • Detail: Plain
  • Fabric: Polyester
  • Style: Maxi Dress
$119.00 $289.00
favourite
Petite Crinkle Cross Front Georgette Woven Maxi Dress
Petite
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KarenMillen

Petite Crinkle Cross Front Georgette Woven Maxi Dress

  • Fabric: Woven
  • Length: Maxi
  • Style: Maxi Dress
$309.00
favourite
Jersey Crepe Ruched Long Sleeve Maxi Dress
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KarenMillen

Jersey Crepe Ruched Long Sleeve Maxi Dress

  • Design: Plain
  • Fabric: Jersey
  • Length: Maxi
$55.00 $179.00
teal color mango color
Showing 40 of 123
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