Skip to main content
Close Search
Clear Search Input
search button Go to account Go to wishlist Go to cart

Size 18 Wedding Guest Outfits

310 products

Filters

Style Open or Close section Open or Close section
Search for style
  • No results found
Size Open or Close section Open or Close section
Colour Open or Close section Open or Close section
Body fit Open or Close section Open or Close section
Brand Open or Close section Open or Close section
Search for brands
  • No results found
Gender Open or Close section Open or Close section
Occasion Open or Close section Open or Close section
Prices Open or Close section Open or Close section
Length Open or Close section Open or Close section
Fabric Open or Close section Open or Close section
Sleeve length Open or Close section Open or Close section
Neckline Open or Close section Open or Close section
Design Open or Close section Open or Close section
Detail Open or Close section Open or Close section
Sort:   Relevance
Open or Close section
  • Price: Low-high
  • Price: High-Low
  • Sort: Relevance
  • Sort: Best Sellers
  • Sort: Newness
favourite
Plus Leopard Angel Sleeve Midaxi Dress
Plus
boohoo

Plus Leopard Angel Sleeve Midaxi Dress

  • Body fit: Plus
  • Length: Midaxi
  • Sleeve length: Short Sleeve
£27.20 £32.00 -15%
favourite
Plus Bridesmaid Satin Strappy Maxi Dress
Plus
boohoo

Plus Bridesmaid Satin Strappy Maxi Dress

  • Body fit: Plus
  • Neckline: Strappy
  • Style: Slip Dress
£13.00 £35.00 -63%
favourite
Plus Tie Neck Chiffon Smock Dress
Plus
boohoo

Plus Tie Neck Chiffon Smock Dress

  • Body fit: Plus
  • Occasion: Occasion
  • Sleeve length: Long Sleeve
£21.25 £25.00 -15%
favourite
Plus Tile Print Chiffon Asymmetric Maxi Dress
Plus
boohoo

Plus Tile Print Chiffon Asymmetric Maxi Dress

  • Occasion: Occasion
  • Sleeve length: Strappy
  • Style: Skater Dress
£28.00 £35.00 -20%
favourite
Crinkle Chiffon Cowl Neck Maxi Dress
boohoo

Crinkle Chiffon Cowl Neck Maxi Dress

  • Neckline: Halterneck
  • Occasion: Occasion
  • Style: Fit & Flare Dress
£9.00 £30.00 -70%
favourite
Plus Mesh Ruched Drop Hem Maxi Dress
Plus
boohoo

Plus Mesh Ruched Drop Hem Maxi Dress

  • Body fit: Plus
  • Sleeve length: Sleeveless
  • Style: Skater Dress
£24.65 £29.00 -15%
favourite
Plus Textured Flare Sleeve Maxi Dress
Plus
boohoo

Plus Textured Flare Sleeve Maxi Dress

  • Body fit: Plus
  • Length: Maxi
  • Occasion: Occasion
£42.50 £50.00 -15%
favourite
Plus Tailored Pleat Detail Playsuit
Plus
boohoo

Plus Tailored Pleat Detail Playsuit

  • Body fit: Plus
  • Length: Short
  • Neckline: High Neck
£18.70 £22.00 -15%
favourite
Plus Tailored Pleat Detail Playsuit
Plus
boohoo

Plus Tailored Pleat Detail Playsuit

  • Body fit: Plus
  • Fabric: Liverpool Crepe
  • Style: Tailored Playsuit
£18.70 £22.00 -15%
favourite
Plus Satin Wide Leg Trouser
Plus
boohoo

Plus Satin Wide Leg Trouser

  • Body fit: Plus
  • Occasion: Occasion
  • Style: Wide Leg Trousers
£13.00 £28.00 -54%
favourite
Plus Chiffon Tie Front Shift Dress
Plus
boohoo

Plus Chiffon Tie Front Shift Dress

  • Length: Mini
  • Occasion: Occasion
  • Style: Shift Dress
£19.60 £28.00 -30%
favourite
Plus Chiffon Ruffle Maxi Dress
Plus
boohoo

Plus Chiffon Ruffle Maxi Dress

  • Occasion: Occasion
  • Sleeve length: Strappy
  • Style: Fit & Flare Dress
£15.00 £30.00 -50%
favourite
Mix Print Organza Belted Midi Dress
Debenhams

Mix Print Organza Belted Midi Dress

  • Body fit: Main
  • Design: Print
  • Neckline: Collared
£59.00
favourite
Plus Sequin Wrap Midi Skater Dress
Plus
boohoo

Plus Sequin Wrap Midi Skater Dress

  • Body fit: Plus
  • Occasion: Occasion
  • Style: Skater Dress
£29.00 £45.00 -36%
favourite
Premium Structured Lace Maxi Dress
boohoo

Premium Structured Lace Maxi Dress

  • Body fit: Main
  • Length: Maxi
  • Occasion: Occasion
£35.70 £42.00 -15%
favourite
Satin Cross Back Maxi Slip Dress
boohoo

Satin Cross Back Maxi Slip Dress

  • Occasion: Occasion
  • Sleeve length: Strappy
  • Style: Slip Dress
£10.00 £32.00 -69%
favourite
Halterneck Tailored Asymmetric Mini Dress
boohoo

Halterneck Tailored Asymmetric Mini Dress

  • Occasion: Occasion
  • Sleeve length: Sleeveless
  • Style: Skater Dress
£15.00 £35.00 -57%
favourite
Satin Halterneck Maxi Dress
boohoo

Satin Halterneck Maxi Dress

  • Occasion: Occasion
  • Sleeve length: Sleeveless
  • Style: Fit & Flare Dress
£19.00 £38.00 -50%
favourite
Plus Tailored Pleated Skater Blazer Dress
Plus
boohoo

Plus Tailored Pleated Skater Blazer Dress

  • Length: Mini
  • Neckline: Plunge
  • Style: Blazer Dress
£30.40 £38.00 -20%
favourite
Plus Mesh Bardot Ruched Maxi Dress
Plus
boohoo

Plus Mesh Bardot Ruched Maxi Dress

  • Length: Maxi
  • Neckline: Bardot
  • Occasion: Occasion
£20.80 £26.00 -20%
favourite
Plus Velvet Bardot Mini Dress
Plus
boohoo

Plus Velvet Bardot Mini Dress

  • Body fit: Plus
  • Neckline: Bardot
  • Style: Skater Dress
£18.00 £35.00 -49%
favourite
Plus Premium Lace Maxi Skirt
Plus
boohoo

Plus Premium Lace Maxi Skirt

  • Body fit: Plus
  • Length: Maxi
  • Occasion: Occasion
£23.80 £28.00 -15%
favourite
Plus Leopard Cinched Blouson Sleeve Top
Plus
boohoo

Plus Leopard Cinched Blouson Sleeve Top

  • Body fit: Plus
  • Occasion: Occasion
  • Sleeve length: Long Sleeve
£17.00 £20.00 -15%
favourite
Velvet Sequin Wrap Blazer Party Dress
boohoo

Velvet Sequin Wrap Blazer Party Dress

  • Body fit: Main
  • Neckline: Collared
  • Style: Blazer Dress
£25.00 £50.00 -50%
favourite
Plus Chiffon Leopard Print Wrap Midaxi Dress
Plus
boohoo

Plus Chiffon Leopard Print Wrap Midaxi Dress

  • Body fit: Plus
  • Occasion: Occasion
  • Style: Wrap Dress
£24.50 £35.00 -30%
favourite
Plus Corset Detail Skater Dress
Plus
boohoo

Plus Corset Detail Skater Dress

  • Body fit: Plus
  • Length: Mini
  • Sleeve length: Long Sleeve
£18.20 £26.00 -30%
favourite
Plus Polka Dot Tailored Pleat Detail Playsuit
Plus
boohoo

Plus Polka Dot Tailored Pleat Detail Playsuit

  • Body fit: Plus
  • Design: Polka dot
  • Sleeve length: Sleeveless
£20.40 £24.00 -15%
favourite
Asymmetric Column Maxi Dress
boohoo

Asymmetric Column Maxi Dress

  • Length: Maxi
  • Neckline: Asymmetric
  • Style: Fit & Flare Dress
£12.00 £31.00 -61%
favourite
Plus Ruching Detail Halter Neck Maxi Dress
Plus
boohoo

Plus Ruching Detail Halter Neck Maxi Dress

  • Length: Maxi
  • Neckline: Halterneck
  • Style: Skater Dress
£24.00 £30.00 -20%
favourite
Plus Pearl Embellished Blazer Dress
Plus
boohoo

Plus Pearl Embellished Blazer Dress

  • Body fit: Plus
  • Neckline: Wrap
  • Style: Blazer Dress
£46.75 £55.00 -15%
favourite
Maternity Drape Detail Maxi Dress
boohoo

Maternity Drape Detail Maxi Dress

  • Fabric: Polyester
  • Occasion: Occasion
  • Sleeve length: Short Sleeve
£23.80 £28.00 -15%
favourite
Broderie Bardot Structured Skater Dress
boohoo

Broderie Bardot Structured Skater Dress

  • Neckline: Bardot
  • Sleeve length: Sleeveless
  • Style: Skater Dress
£23.80 £28.00 -15%
favourite
Structured Satin Skater Mini Dress
boohoo

Structured Satin Skater Mini Dress

  • Design: Plain
  • Neckline: Bandeau
  • Style: Skater Dress
£30.40 £38.00 -20%
favourite
Maternity Mesh Ditsy Midaxi Dress
boohoo

Maternity Mesh Ditsy Midaxi Dress

  • Body fit: Maternity
  • Fabric: Polyester
  • Length: Midaxi
£21.25 £25.00 -15%
favourite
Plus Tailored Starfish Button Trim Bandeau Waistcoat
Plus
boohoo

Plus Tailored Starfish Button Trim Bandeau Waistcoat

  • Body fit: Plus
  • Neckline: Bandeau
  • Occasion: Occasion
£9.00 £25.00 -64%
favourite
Plus Chiffon Frill Maxi Dress
Plus
boohoo

Plus Chiffon Frill Maxi Dress

  • Body fit: Plus
  • Length: Maxi
  • Occasion: Occasion
£32.30 £38.00 -15%
favourite
Plus Floral Chiffon Plunge Maxi Dress
Plus
boohoo

Plus Floral Chiffon Plunge Maxi Dress

  • Body fit: Plus
  • Occasion: Occasion
  • Style: Fit & Flare Dress
£27.20 £32.00 -15%
favourite
Halterneck Seam Detail Fluid Maxi Dress
boohoo

Halterneck Seam Detail Fluid Maxi Dress

  • Body fit: Main
  • Length: Maxi
  • Occasion: Occasion
£23.80 £28.00 -15%
favourite
Formal Drop Waist Midi Dress
Debenhams

Formal Drop Waist Midi Dress

  • Body fit: Main
  • Neckline: Crew
  • Style: Drop Waist Dress
£33.00 £55.00 -40%
favourite
Plus Slash Neck Peplum Dress
Plus
boohoo

Plus Slash Neck Peplum Dress

  • Body fit: Plus
  • Design: Plain
  • Style: Bodycon Dress
£13.00 £23.00 -43%
favourite
Satin Frill Strap Maxi Dress
boohoo

Satin Frill Strap Maxi Dress

  • Body fit: Main
  • Length: Maxi
  • Style: Slip Dress
£15.00 £40.00 -62%
favourite
Floral Chiffon Asymmetric Column Maxi Dress
boohoo

Floral Chiffon Asymmetric Column Maxi Dress

  • Body fit: Main
  • Neckline: Asymmetric
  • Style: Fit & Flare Dress
£13.00 £35.00 -63%
favourite
Plus Puff Sleeve Puffball Dress
Plus
boohoo

Plus Puff Sleeve Puffball Dress

  • Body fit: Plus
  • Sleeve length: Short Sleeve
  • Style: Skater Dress
£21.00 £28.00 -25%
favourite
GOLD TRIM DETAIL BLAZER DRESS
boohoo

GOLD TRIM DETAIL BLAZER DRESS

  • Length: Mini
  • Neckline: Crew
  • Sleeve length: Long Sleeve
£27.00 £36.00 -25%
favourite
Plus Leopard Lace Trim Angel Sleeve Slip Dress
Plus
boohoo

Plus Leopard Lace Trim Angel Sleeve Slip Dress

  • Occasion: Occasion
  • Sleeve length: Short Sleeve
  • Style: Slip Dress
£19.00 £32.00 -41%
favourite
Plus Burnout Floral Long Sleeve Skater Dress
Plus
boohoo

Plus Burnout Floral Long Sleeve Skater Dress

  • Body fit: Plus
  • Length: Midaxi
  • Sleeve length: Short Sleeve
£25.60 £32.00 -20%
favourite
Plus Satin Scarf Detail Chiffon Skirt Maxi Dress
Plus
boohoo

Plus Satin Scarf Detail Chiffon Skirt Maxi Dress

  • Occasion: Occasion
  • Sleeve length: Strappy
  • Style: Column Dress
£22.00 £40.00 -45%
favourite
Textured Ruffle Asymmetric Maxi Dress
boohoo

Textured Ruffle Asymmetric Maxi Dress

  • Occasion: Occasion
  • Sleeve length: Strappy
  • Style: Fit & Flare Dress
£32.00 £40.00 -20%
favourite
Ombre Print Ruffle Asymmetric Maxi Dress
boohoo

Ombre Print Ruffle Asymmetric Maxi Dress

  • Length: Maxi
  • Sleeve length: Strappy
  • Style: Smock Dress
£22.00 £45.00 -51%
favourite
Ruffle Chiffon Maxi Dress
boohoo

Ruffle Chiffon Maxi Dress

  • Design: Plain
  • Sleeve length: Strappy
  • Style: Fit & Flare Dress
£37.40 £44.00 -15%
favourite
Extreme Taffeta Ruffle Bardot Structured Midaxi Skater Dress
boohoo

Extreme Taffeta Ruffle Bardot Structured Midaxi Skater Dress

  • Body fit: Main
  • Sleeve length: Sleeveless
  • Style: Skater Dress
£43.50 £58.00 -25%
favourite
Premium Structured Lace Maxi Dress
boohoo

Premium Structured Lace Maxi Dress

  • Length: Maxi
  • Occasion: Occasion
  • Style: Fit & Flare Dress
£31.50 £42.00 -25%
favourite
Structured Skater Maxi Dress
boohoo

Structured Skater Maxi Dress

  • Body fit: Main
  • Fabric: Crepe
  • Style: Skater Dress
£28.00 £35.00 -20%
favourite
Dropped Waist Pleated Maxi Dress
boohoo

Dropped Waist Pleated Maxi Dress

  • Body fit: Main
  • Neckline: V Neck
  • Occasion: Occasion
£16.00 £35.00 -54%
favourite
Plus Mesh Bardot Ruched Maxi Dress
Plus
boohoo

Plus Mesh Bardot Ruched Maxi Dress

  • Length: Maxi
  • Neckline: Bardot
  • Sleeve length: Sleeveless
£17.00 £28.00 -39%
favourite
Plus Boxy Puff Hem Blazer Dress
Plus
boohoo

Plus Boxy Puff Hem Blazer Dress

  • Neckline: Plunge
  • Sleeve length: Long Sleeve
  • Style: Blazer Dress
£21.00 £30.00 -30%
favourite
Plus High Neck Lace Satin Structured Mini Dress
Plus
boohoo

Plus High Neck Lace Satin Structured Mini Dress

  • Length: Mini
  • Neckline: High Neck
  • Style: Shift Dress
£17.00 £38.00 -55%
favourite
Bardot Boucle Sequin Shift Mini Dress
boohoo

Bardot Boucle Sequin Shift Mini Dress

  • Body fit: Main
  • Neckline: Bardot
  • Style: Shift Dress
£28.00 £55.00 -49%
favourite
Plus Square Neck Corset Detail Velvet Dress
Plus
boohoo

Plus Square Neck Corset Detail Velvet Dress

  • Length: Mini
  • Neckline: Square
  • Sleeve length: Strappy
£15.00 £40.00 -62%
favourite
Disc Sequin Bandeau Skater Dress
boohoo

Disc Sequin Bandeau Skater Dress

  • Length: Mini
  • Neckline: Bandeau
  • Occasion: Occasion
£25.00 £50.00 -50%
Showing 60 of 310
Back to main content