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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KarenMillen
Scuba Drama Ruffle Hem Woven Maxi Dress
- Detail: Ruffle
- Neckline: Crew
- Sleeve length: Sleeveless
$350.00
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KarenMillen
Crystal Neck Trim Viscose Ribbed Maxi Dress With Godets
- Fabric: Knitted
- Length: Maxi
- Neckline: High Neck
$306.00
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KarenMillen
Drapey Crepe Maxi Dress With Gathered Cape Detail
- Design: Plain
- Detail: Ruched
- Sleeve length: Sleeveless
$163.00
$328.00
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KarenMillen
Figure Form Crystal Embellished Maxi Dress
- Design: Plain
- Detail: Embellished
- Length: Maxi
$306.00
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KarenMillen
Stretch Crepe Jersey Plunge Neck Maxi Dress
- Design: Plain
- Fabric: Polyester
- Length: Maxi
$394.00
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KarenMillen
Crystal Embellished Ruched Detail Sleeveless Midi Dress
- Length: Midi
- Neckline: Crew
- Style: Midi Dress
$139.00
$394.00
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KarenMillen
Long Sleeve Slinky Drape Ruched Detail Maxi Dress
- Design: Plain
- Detail: Plain
- Length: Maxi
$284.00
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KarenMillen
Twist Detail Studded Jersey Maxi Dress
- Detail: Studded
- Fabric: Jersey
- Style: Maxi Dress
$198.00
$394.00
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KarenMillen
Crystal Embellished Ruched Detail Sleeveless Midi Dress
- Detail: Embellished
- Neckline: Crew
- Style: Midi Dress
$139.00
$394.00
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KarenMillen
Ponte And Georgette Mix Balloon Sleeve Cut Out Detail Pleated Maxi Dress
- Design: Plain
- Length: Maxi
- Sleeve length: Long Sleeve
$284.00
Plus
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KarenMillen
Plus Size Forever Twill Woven Prom Maxi Skirt
- Design: Plain
- Length: Maxi
- Style: Maxi Skirt
$218.00
Tall
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KarenMillen
Metallic Jersey Open Back Detail Maxi Dress
- Neckline: High Neck
- Sleeve length: Long Sleeve
- Style: Maxi Dress
$306.00
Plus
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KarenMillen
Plus Size Pinstripe Tailored Sleeveless Midi Dress
- Length: Midi
- Sleeve length: Sleeveless
- Style: Midi Dress
$438.00
Plus
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KarenMillen
Plus Size Pinstripe Belted Tailored Shirt Dress
- Design: Pinstripe
- Detail: Belted
- Neckline: Collared
$548.00
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KarenMillen
Embellished Figure Form Bandage And Chiffon Sleeve Midi Dress
- Design: Fabric Interest
- Fabric: Polyester
- Style: Knitted Dress
$145.00
$416.00
Plus
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KarenMillen
Plus Size Gold Beaded Bandeau Velvet Midi Dress
- Detail: Embellished
- Length: Midi
- Neckline: Bandeau
$570.00
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KarenMillen
Crystal Applique Angel Sleeve Woven Maxi Dress
- Design: Floral
- Neckline: High Neck
- Sleeve length: Short Sleeve
$1076.00
Plus
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KarenMillen
Plus Size Pleated Bead Detail Halterneck Maxi Dress
- Length: Maxi
- Neckline: Halterneck
- Style: Maxi Dress
$328.00
Plus
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KarenMillen
Plus Size Scenic Print Cotton Sateen Shirt Dress
- Fabric: Woven
- Sleeve length: Sleeveless
- Style: Shirt Dress
$163.00
$328.00
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KarenMillen
Drapey Crepe Ruched Detail Maxi Dress
- Design: Plain
- Neckline: Cowl
- Style: Maxi Dress
$328.00
Plus
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KarenMillen
Plus Size Textured Tailored Rounded Sleeve Pencil Midi Dress
- Detail: Plain
- Sleeve length: Half Sleeve
- Style: Pencil Dress
$438.00
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KarenMillen
Hot Fix Draped Detail Jersey Maxi Dress
- Neckline: Crew
- Sleeve length: Cap Sleeve
- Style: Maxi Dress
$504.00
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KarenMillen
Drapey Crepe Off The Shoulder Ruched Detail Fishtail Maxi Dress
- Detail: Ruched
- Fabric: Acetate slinky
- Length: Maxi
$328.00
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KarenMillen
Premium Ruched Long Sleeved Jersey Maxi Dress
- Fabric: Polyester
- Neckline: Crew
- Style: Maxi Dress
$328.00
Petite
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KarenMillen
Petite Scoop Neck Jersey Cotton Mix Maxi Dress
- Detail: Plain
- Length: Maxi
- Sleeve length: Strappy
$143.00
$284.00
Petite
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KarenMillen
Petite Figure Form Crystal Embellished Maxi Dress
- Detail: Embellished
- Neckline: V Neck
- Style: Maxi Dress
$306.00
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KarenMillen
Studded Ponte Jersey Midi Dress
- Detail: Embellished
- Neckline: Crew
- Style: Midi Dress
$284.00
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KarenMillen
Cotton Ponte Jersey Ruffle Hem Maxi Dress
- Detail: Ruffle
- Neckline: Scoop
- Style: Maxi Dress
$262.00
Plus
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KarenMillen
Plus Size Embroidered Halterneck Pleated Midi Dress
- Length: Midi
- Neckline: Round Neck
- Style: Midi Dress
$658.00
Petite
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KarenMillen
Petite Forever Ponte And Georgette Jersey Pleated Maxi Dress
- Detail: Pleated
- Neckline: Crew
- Sleeve length: Sleeveless
$306.00
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KarenMillen
Premium Embellished Caped Maxi Dress
- Design: Fabric Interest
- Length: Maxi
- Neckline: Crew
$878.00
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KarenMillen
Premium Slinky Crepe Embellished Cut Out Maxi Dress
- Design: Embellished
- Fabric: Cotton
- Neckline: Asymmetric
$108.00
$306.00
Petite
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KarenMillen
Petite Crystal Embellished Tie Detail Halter Neck Maxi Dress
- Design: Plain
- Detail: Embellished
- Length: Maxi
$218.00
$438.00
Petite
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KarenMillen
Petite Drapey Crepe Maxi Dress With Gathered Cape Detail
- Length: Maxi
- Neckline: Crew
- Style: Maxi Dress
$165.00
$328.00
Plus
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KarenMillen
Plus Size Essential Techno Short Sleeve Woven Shirt Dress With Gold Hardware
- Neckline: Collared
- Sleeve length: Short Sleeve
- Style: Maxi Dress
$284.00
Petite
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KarenMillen
Petite Scuba Crepe Crystal Bow Detail Midi Dress
- Length: Midi
- Neckline: Crew
- Style: Midi Dress
$526.00
Petite
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KarenMillen
Petite Long Sleeve Slinky Drape Ruched Detail Maxi Dress
- Detail: Plain
- Length: Maxi
- Style: Maxi Dress
$284.00
Plus
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KarenMillen
Plus Size Forever Soft Tailored Colour Block High Neck Pleated Midi Dress
- Detail: Plain
- Fabric: Polyester
- Sleeve length: Sleeveless
$438.00
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KarenMillen
Blue Floral Off The Shoulder Shirred Woven Maxi Dress
- Design: Floral
- Sleeve length: Long Sleeve
- Style: Maxi Dress
$123.00
$350.00
Plus
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KarenMillen
Plus Size Compact Stretch and Sheer Tailored Pencil Dress
- Length: Midi
- Neckline: Collarless
- Style: Pencil Dress
$548.00
Showing 40 of 513