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

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

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$319.00
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Plus Size Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress
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KarenMillen

Plus Size Foil Metallic Figure Form Bandage Strappy Knit Maxi Dress

  • Length: Maxi
  • Sleeve length: Strappy
  • Style: Maxi Dress
$319.00
blush color pale-blue color
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Plus Size Tailored Crepe Cape Asymmetric Cape Neck Detail Midi Dress
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KarenMillen

Plus Size Tailored Crepe Cape Asymmetric Cape Neck Detail Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
$339.00
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Plus Size Floral Woven Shirt Dress
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KarenMillen

Plus Size Floral Woven Shirt Dress

  • Length: Maxi
  • Sleeve length: Long Sleeve
  • Style: Maxi Dress
$479.00
mono color black color
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Plus Size Bandage Figure Form Knit Woven Cape Detail Maxi Dress
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KarenMillen

Plus Size Bandage Figure Form Knit Woven Cape Detail Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$259.00
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Plus Size Premium Viscose Linen Tailored Belted Full Skirted Midi Dress
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KarenMillen

Plus Size Premium Viscose Linen Tailored Belted Full Skirted Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
$539.00
favourite
Plus Size Compact Stretch Seam Detail Tailored Full Skirted Midi Dress
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KarenMillen

Plus Size Compact Stretch Seam Detail Tailored Full Skirted Midi Dress

  • Detail: Pleated
  • Length: Midi
  • Style: Midi Dress
$519.00
favourite
Plus Size Tailored Belted Midi Shirt Dress
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KarenMillen

Plus Size Tailored Belted Midi Shirt Dress

  • Detail: Buttons
  • Length: Midi
  • Neckline: Collared
$399.00
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Plus Size Crinkle Floral Print Beaded High Neck Maxi Dress
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KarenMillen

Plus Size Crinkle Floral Print Beaded High Neck Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$439.00
favourite
Plus Size Twill Contrast Tux Tailored Full Skirted Shirt Dress
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KarenMillen

Plus Size Twill Contrast Tux Tailored Full Skirted Shirt Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Full Skirted Dress
$459.00
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Plus Size Crystal Embellished Woven Plunge Detail Maxi Dress
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KarenMillen

Plus Size Crystal Embellished Woven Plunge Detail Maxi Dress

  • Length: Maxi
  • Sleeve length: Long Sleeve
  • Style: Maxi Dress
$359.00 $719.00
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Plus Size Crystal Embellished Woven Plunge Detail Maxi Dress
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KarenMillen

Plus Size Crystal Embellished Woven Plunge Detail Maxi Dress

  • Length: Maxi
  • SleeveLength: Long Sleeve
  • Style: Maxi Dress
$429.00 $719.00
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Plus Size Structured Tailored Belted Midi Dress
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KarenMillen

Plus Size Structured Tailored Belted Midi Dress

  • Length: Midi
  • Sleeve length: Short Sleeve
  • Style: Midi Dress
$439.00
favourite
Plus Size Compact Stretch Bow Tie Neck Trim Detail Tailored Full Midi Dress
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KarenMillen

Plus Size Compact Stretch Bow Tie Neck Trim Detail Tailored Full Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
$239.00 $479.00
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Plus Size Tailored Roll Neck Pencil Midi Dress
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KarenMillen

Plus Size Tailored Roll Neck Pencil Midi Dress

  • Length: Midi
  • Sleeve length: Short Sleeve
  • Style: Midi Dress
$399.00
favourite
Plus Size Premium Crystal Embellished Woven Maxi Dress
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KarenMillen

Plus Size Premium Crystal Embellished Woven Maxi Dress

  • Length: Maxi
  • SleeveLength: Long Sleeve
  • Style: Maxi Dress
$419.00 $1199.00
favourite
Plus Size Figure Form Bandage Sleeveless Pencil Knit Maxi Dress
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KarenMillen

Plus Size Figure Form Bandage Sleeveless Pencil Knit Maxi Dress

  • Occasion: Occasion
  • SleeveLength: Sleeveless
  • Style: Knitted Dress
$85.00 $279.00
favourite
Plus Size Premium Slinky Crepe Scarf Detail Maxi Dress
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KarenMillen

Plus Size Premium Slinky Crepe Scarf Detail Maxi Dress

  • Length: Maxi
  • SleeveLength: Sleeveless
  • Style: Maxi Dress
$189.00 $379.00
favourite
Plus Size Cotton Poplin Pleated Maxi Dress
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KarenMillen

Plus Size Cotton Poplin Pleated Maxi Dress

  • Fabric: Woven
  • Length: Maxi
  • Sleeve length: Sleeveless
$359.00
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Plus Size Hand Embroidered And Sequin Organdie Deep V Woven Maxi Dress
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KarenMillen

Plus Size Hand Embroidered And Sequin Organdie Deep V Woven Maxi Dress

  • Occasion: Occasion
  • SleeveLength: Short Sleeve
  • Style: Maxi Dress
$239.00 $799.00
favourite
Plus Size Compact Stretch Ruffle Peplum Belted Pencil Midi Dress
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KarenMillen

Plus Size Compact Stretch Ruffle Peplum Belted Pencil Midi Dress

  • Detail: Belted
  • Sleeve length: Sleeveless
  • Style: mididress
$459.00
favourite
Plus Size Crinkle Cold Shoulder Georgette Woven Maxi Dress
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KarenMillen

Plus Size Crinkle Cold Shoulder Georgette Woven Maxi Dress

  • Design: Plain
  • Neckline: Cold Shoulder
  • Sleeve length: Long Sleeve
$319.00
favourite
Plus Size Compact Stretch Tailored Colour Block Full Skirted Midi Dress
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KarenMillen

Plus Size Compact Stretch Tailored Colour Block Full Skirted Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
$289.00 $479.00
favourite
Plus Size Bandage Figure Form Knit Embellished Maxi Dress
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KarenMillen

Plus Size Bandage Figure Form Knit Embellished Maxi Dress

  • Length: Maxi
  • Sleeve length: Strappy
  • Style: Maxi Dress
$339.00
favourite
Plus Size Textured Tailored Twill Full Skirt Midi Dress
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KarenMillen

Plus Size Textured Tailored Twill Full Skirt Midi Dress

  • Length: Midi
  • Sleeve length: Strappy
  • Style: Midi Dress
$339.00
favourite
Plus Size Soft Tailored One Shoulder Cape Sleeve Maxi Dress
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KarenMillen

Plus Size Soft Tailored One Shoulder Cape Sleeve Maxi Dress

  • Length: Maxi
  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$519.00
favourite
Plus Size Long Sleeve Jersey Maxi Dress
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KarenMillen

Plus Size Long Sleeve Jersey Maxi Dress

  • Design: Plain
  • Detail: Plain
  • Sleeve length: Long Sleeve
$239.00
favourite
Amelia Graham Plus Size Burnout Lace Up Detail Woven Column Dress
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KarenMillen

Amelia Graham Plus Size Burnout Lace Up Detail Woven Column Dress

  • Length: Midi
  • Occasion: Occasion
  • Style: Midi Dress
$109.00 $379.00
favourite
Plus Size Sequin Plunge Cowl Neck Strong Shoulder Long Sleeve Midi Dress
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KarenMillen

Plus Size Sequin Plunge Cowl Neck Strong Shoulder Long Sleeve Midi Dress

  • Length: Midi
  • Sleeve length: Long Sleeve
  • Style: Midi Dress
$149.00 $299.00
favourite
Plus Size Soft Tailored Colour Block Side Pleated Midi Dress
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KarenMillen

Plus Size Soft Tailored Colour Block Side Pleated Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
$139.00 $459.00
favourite
Plus Size Tailored Velvet High Neck Mini Dress
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KarenMillen

Plus Size Tailored Velvet High Neck Mini Dress

  • Occasion: Occasion
  • SleeveLength: Long Sleeve
  • Style: Mini Dress
$99.00 $259.00
favourite
Plus Size Marble Soft Pleated V Neck Woven Maxi Dress
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KarenMillen

Plus Size Marble Soft Pleated V Neck Woven Maxi Dress

  • Sleeve length: Sleeveless
  • Style: Maxi Dress
$209.00 $359.00
favourite
Plus Size Stretch Drapey Crepe Ruched Plunge Neck Batwing Sleeve Maxi Dress
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KarenMillen

Plus Size Stretch Drapey Crepe Ruched Plunge Neck Batwing Sleeve Maxi Dress

  • Length: Maxi
  • Occasion: Occasion
  • Style: Maxi Dress
$139.00 $239.00
favourite
Plus Size Floral Applique Embellished Organdie Woven Mini Dress
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KarenMillen

Plus Size Floral Applique Embellished Organdie Woven Mini Dress

  • Length: Mini
  • SleeveLength: Long Sleeve
  • Style: Mini Dress
$159.00 $519.00
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Plus Size Square Neck Tailored Full Skirted Maxi Dress
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KarenMillen

Plus Size Square Neck Tailored Full Skirted Maxi Dress

  • Design: Spots
  • Detail: Plain
  • Neckline: Square
$399.00
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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
$299.00
favourite
Plus Size Compact Stretch Ruffle Shoulder Tailored Dress
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KarenMillen

Plus Size Compact Stretch Ruffle Shoulder Tailored Dress

  • Length: Knee Length
  • Occasion: Occasion
  • Style: Pencil Dress
$139.00 $459.00
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