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Plus Size Birthday Dresses

Spotlighting our esteemed focus on bespoke size and fit, discover an elevated edit of plus size birthday dresses that will mark your moment with luxurious aplomb. Ready for your 21st, 30th, 40th, and beyond, the mini, midi, and maxi silhouettes in our plus size birthday dress edit are crafted from premium textiles. 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 bespoke fit with four-way support. Scintillating with extra-special aplomb, you’ll also find the plus size sequin birthday dress below. Find your plus size dress for birthday below.
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favourite
Plus Size Cotton Broderie Belted Shirt Dress
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KarenMillen

Plus Size Cotton Broderie Belted Shirt Dress

  • Fabric: Woven
  • Length: Midi
  • Sleeve length: Long Sleeve
£119.20 £149.00
favourite
Plus Size Structured Crepe Forever Pleat Dress
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KarenMillen

Plus Size Structured Crepe Forever Pleat Dress

  • Length: Midi
  • Occasion: Smart
  • Style: Midi Dress
£175.20 £219.00
favourite
Plus Size Cotton Poplin Pleated Maxi Dress
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KarenMillen

Plus Size Cotton Poplin Pleated Maxi Dress

  • Design: Plain
  • Length: Maxi
  • Sleeve length: Sleeveless
£143.20 £179.00
favourite
Plus Size Tailored Belted Midi Shirt Dress
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KarenMillen

Plus Size Tailored Belted Midi Shirt Dress

  • Neckline: Collared
  • Sleeve length: Long Sleeve
  • Style: Shirt Dress
£139.30 £199.00
favourite
Plus Size Cutwork Cotton Collared Woven Shirt Dress
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KarenMillen

Plus Size Cutwork Cotton Collared Woven Shirt Dress

  • Neckline: Collared
  • Sleeve length: Long Sleeve
  • Style: Shirt Dress
£179.00
favourite
Plus Size Stripe Cotton Rosette Woven Shirt Maxi Dress
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KarenMillen

Plus Size Stripe Cotton Rosette Woven Shirt Maxi Dress

  • Occasion: Daywear
  • SleeveLength: Long Sleeve
  • Style: Maxi Dress
£104.30 £149.00
favourite
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
£139.30 £199.00
favourite
Plus Size Long Sleeve Jersey Maxi Dress
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KarenMillen

Plus Size Long Sleeve Jersey Maxi Dress

  • Detail: Plain
  • Fabric: Jersey
  • Length: Maxi
£119.00
favourite
Plus Size Polished Linen Blend Asymmetric Fold Detail Tailored Midi Pencil Dress
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KarenMillen

Plus Size Polished Linen Blend Asymmetric Fold Detail Tailored Midi Pencil Dress

  • Neckline: Asymmetric
  • Sleeve length: Short Sleeve
  • Style: Midi Dress
£139.30 £199.00
favourite
Plus Size Tailored Linen Statement Button Front Pencil Midi Dress
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KarenMillen

Plus Size Tailored Linen Statement Button Front Pencil Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
£159.20 £199.00
favourite
Plus Size Cotton Cutwork Woven Shirt Midi Dress
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KarenMillen

Plus Size Cotton Cutwork Woven Shirt Midi Dress

  • Design: Plain
  • Detail: Plain
  • Style: Midi Dress
£199.00
favourite
Plus Size Crinkle Cold Shoulder Georgette Woven Maxi Dress
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KarenMillen

Plus Size Crinkle Cold Shoulder Georgette Woven Maxi Dress

  • Fabric: Woven
  • Sleeve length: Long Sleeve
  • Style: Maxi Dress
£159.00
favourite
Plus Size Compact Stretch Dropped Waist Full Skirted Midi Dress
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KarenMillen

Plus Size Compact Stretch Dropped Waist Full Skirted Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
£181.30 £259.00
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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
£153.30 £219.00
favourite
Plus Size Compact Stretch Cotton Mix Tailored Full Skirted Midi Dress
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KarenMillen

Plus Size Compact Stretch Cotton Mix Tailored Full Skirted Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
£160.30 £229.00
favourite
Plus Size Rose Embroidered Cotton Twill Woven Long Sleeve Maxi Dress
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KarenMillen

Plus Size Rose Embroidered Cotton Twill Woven Long Sleeve Maxi Dress

  • Design: Embroidered
  • Fabric: Woven
  • Sleeve length: Long Sleeve
£174.30 £249.00
favourite
Plus Size Fruit Print Tape Detail Long Sleeve Woven Mini Dress
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KarenMillen

Plus Size Fruit Print Tape Detail Long Sleeve Woven Mini Dress

  • Design: Floral
  • Fabric: Woven
  • Style: Mini Dress
£129.00
favourite
Plus Size Premium Cotton Tailored Fabric Belted Buckle Midi Dress
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KarenMillen

Plus Size Premium Cotton Tailored Fabric Belted Buckle Midi Dress

  • Fabric: Cotton
  • Neckline: High Neck
  • Style: Midi Dress
£229.00
favourite
Plus Size Techno Cotton Woven Maxi Dress With Contrast Placket
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KarenMillen

Plus Size Techno Cotton Woven Maxi Dress With Contrast Placket

  • Length: Maxi
  • Occasion: Daywear
  • SleeveLength: Long Sleeve
£139.00
favourite
Plus Size Cotton Linen Cornelli Embroidery Open Back Woven Midi Dress
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KarenMillen

Plus Size Cotton Linen Cornelli Embroidery Open Back Woven Midi Dress

  • Length: Midi
  • Sleeve length: Short Sleeve
  • Style: Midi Dress
£188.30 £269.00
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
£169.00
favourite
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
£188.30 £269.00
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
  • SleeveLength: Sleeveless
£57.00 £189.00
favourite
Plus Size Textured Compact Stretch V Neck Button Detail Midi Dress
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KarenMillen

Plus Size Textured Compact Stretch V Neck Button Detail Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
£175.20 £219.00
favourite
Plus Size Tailored Twill Lace Mix Zip Front Mini Dress
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KarenMillen

Plus Size Tailored Twill Lace Mix Zip Front Mini Dress

  • Length: Mini
  • Occasion: Daywear
  • SleeveLength: Short Sleeve
£66.00 £219.00
favourite
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
£153.30 £219.00
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
  • Fabric: Polyester
  • Sleeve length: Sleeveless
£207.20 £259.00
favourite
Plus Size Compact Essential Belted Tailored Full Midi Dress
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KarenMillen

Plus Size Compact Essential Belted Tailored Full Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
£111.00 £159.00
favourite
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
£180.00 £359.00
favourite
Plus Size Tile Print Silk Cotton Volume Sleeve Woven Maxi Dress
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KarenMillen

Plus Size Tile Print Silk Cotton Volume Sleeve Woven Maxi Dress

  • Length: Maxi
  • Sleeve length: Short Sleeve
  • Style: Maxi Dress
£160.30 £229.00
favourite
Plus Size Rose Embroidered Cotton Twill Woven Shirt Dress With Eyelets
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KarenMillen

Plus Size Rose Embroidered Cotton Twill Woven Shirt Dress With Eyelets

  • Length: Maxi
  • Occasion: Daywear
  • Style: Maxi Dress
£179.00 £299.00
favourite
Plus Size Bold Stripe Cotton Woven Maxi Shirt Dress
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KarenMillen

Plus Size Bold Stripe Cotton Woven Maxi Shirt Dress

  • Length: Maxi
  • Sleeve length: Short Sleeve
  • Style: Maxi Dress
£70.00 £139.00
favourite
Plus Size Polished Tailored Double Breasted Sinch Detail Blazer Mini Dress
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KarenMillen

Plus Size Polished Tailored Double Breasted Sinch Detail Blazer Mini Dress

  • Length: Mini
  • SleeveLength: Long Sleeve
  • Style: Blazer Dress
£81.00 £269.00
favourite
Plus Size Spot Jacquard Tailored Bow Neck Full Skirted Midi Dress
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KarenMillen

Plus Size Spot Jacquard Tailored Bow Neck Full Skirted Midi Dress

  • Length: Midi
  • Sleeve length: Sleeveless
  • Style: Midi Dress
£191.20 £239.00
favourite
Plus Size Soft Tailored Asymmetric Neck Draped Waist Detail Midi Dress
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KarenMillen

Plus Size Soft Tailored Asymmetric Neck Draped Waist Detail Midi Dress

  • Occasion: Daywear
  • SleeveLength: Sleeveless
  • Style: Midi Dress
£60.00 £199.00
favourite
Plus Size Textured Tweed Belted Tailored Mini Dress
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KarenMillen

Plus Size Textured Tweed Belted Tailored Mini Dress

  • Length: Mini
  • Occasion: Daywear
  • Style: Mini Dress
£110.00 £219.00
favourite
Plus Size Structured Crepe Tailored Full Skirted Belted Midi Dress
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KarenMillen

Plus Size Structured Crepe Tailored Full Skirted Belted Midi Dress

  • Length: Midi
  • Occasion: Daywear
  • Style: Midi Dress
£60.00 £239.00
favourite
Plus Size Sleeveless Pu Tipped Military Bandage Midi Dress
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KarenMillen

Plus Size Sleeveless Pu Tipped Military Bandage Midi Dress

  • Length: Midi
  • Sleeve length: Long Sleeve
  • Style: Midi Dress
£104.30 £149.00
favourite
Plus Size Embroidered Cotton Twill Woven Maxi Dress
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KarenMillen

Plus Size Embroidered Cotton Twill Woven Maxi Dress

  • Length: Maxi
  • Sleeve length: Long Sleeve
  • Style: Maxi Dress
£139.30 £199.00
favourite
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
£167.30 £239.00
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