1. Home
  2. Summer Clothing
  3. Summer Occasion Dresses

Summer Occasion Dresses
Summer Occasion Dresses

Celebrate the summer season in style with Karen Millen’s curated collection of summer occasion dresses, designed to bring refined elegance and modern polish to every sunlit event. Whether you’re attending a garden party, a destination wedding, or a summer race day, this edit of special occasion dresses for summer offers a balance of sophistication and ease. Crafted from breathable, lightweight fabrics such as flowing chiffon, crisp cotton poplin, soft linen blends, and lustrous satin, each silhouette is designed for warm weather. Explore a variety of styles, including floral patterns, bold brights, soft pastels, and timeless neutrals. Each piece features thoughtful details such as pleating, tiered skirts, delicate draping, and feminine ruching. Explore our collection and find your perfect fit below.

Refine by

From £
to £

Refine by
Sort by
139 Products
View
Sort by
  • KarenMillen
    Georgette Pleated Bustier Cape Back Woven Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Halter Neck Feather Sequin Detail Woven Maxi Dress
    £459.00 £321.30 ( -30 % off )
  • BY LYDIA
    KarenMillen
    Lydia Millen Viscose Floral Border Print Woven Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Embellished Ruffle Strappy Woven Maxi Dress
    £299.00 £209.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Animal Print Georgette Embellished Woven High Neck Cape Blouse
    £159.00 £127.20 ( -20 % off )
  • KarenMillen
    Rose Print Twill Collared Maxi Dress
    £159.00 £111.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Figure Form Bandage Knit Asymmetric Strap Top
    £79.00 £63.20 ( -20 % off )
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Floral Pleated Crinkle Cut Out Woven Maxi Dress
    £179.00 £125.30 ( -30 % off )
  • KarenMillen
    Bow Detail Fascinator
    £79.00 £63.20 ( -20 % off )
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Printed Pleated Yoryu Crinkle Woven Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • KarenMillen
    Asymmetric Bow Headband Fascinator
    £59.00 £50.15 ( -15 % off )
  • KarenMillen
    Floral Applique Structured Woven Mini Dress
    £129.00 £90.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Viscose Sparkle Tie Detail Tiered Skirt Woven Maxi Dress
    £149.00 £104.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Jersey And Georgette Mix Belted Pleat Midi Dress
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Soft Tailored Cape Detail Tailored Midi Dress
    £219.00
  • MATCHING SET
    KarenMillen
    Soft Tailored Waist Wide Leg Trousers
    £159.00 £127.20 ( -20 % off )
  • KarenMillen
    Flower Feather Headband
    £59.00
  • KarenMillen
    Feather Detail Fascinator
    £99.00
  • KarenMillen
    Premium Crystal Embellished Fringe Maxi Dress
    £399.00 £279.30 ( -30 % off )
  • KarenMillen
    Floral Jacquard Twill Corseted Woven Maxi Dress
    £229.00 £160.30 ( -30 % off )
  • KarenMillen
    Tulle Bandeau Tiered Midi Dress
    £139.00 £97.30 ( -30 % off )
  • KarenMillen
    Ombre Floral Soft Pleated One Shoulder Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • KarenMillen
    Floral Jacquard Tailored Midi Pencil Dress
    £219.00 £153.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Digital Ophelia Liquid Metallic Split Woven Maxi Dress
    £159.00 £111.30 ( -30 % off )
  • KarenMillen
    Soft Tailored One Shoulder Cape Sleeve Maxi Dress
    £259.00 £181.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Lydia Millen Petite Viscose Woven Floral Border Shirt Midi Dress
    £159.00 £111.30 ( -30 % off )
  • KarenMillen
    Floral Applique Structured Woven Mini Dress
    £99.00 £69.30 ( -30 % off )
  • KarenMillen
    Structured Crepe Ruffle Shoulder Tailored Full Skirted Midi Dress
    £239.00 £167.30 ( -30 % off )
  • GEORGIA LOUISE EDIT
    KarenMillen
    Ombre Floral Cowl Neck Woven Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Cotton Applique Strappy Woven Maxi Dress
    £329.00 £230.30 ( -30 % off )
  • MATCHING SET
    KarenMillen
    Soft Tailored Single Breasted Blazer
    £229.00
  • KarenMillen
    Abstract Floral Crystal Embellished Woven Split Maxi Dress
    £249.00 £174.30 ( -30 % off )
  • KarenMillen
    Drama Taffeta Rosette Woven Mini Dress With Bow Detail
    £189.00 £132.30 ( -30 % off )
  • KarenMillen
    Floral Tulle Woven Maxi Skirt
    £85.00
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Pleated Cape Sleeve Low Back Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Soft Tailored Halterneck Open Back Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • KarenMillen
    Premium Tailored Linen Asymmetric Shoulder Full Midi Dress
    £279.00 £195.30 ( -30 % off )
  • KarenMillen
    Placed Chain Cotton Sateen Shirt Dress
    £149.00 £104.30 ( -30 % off )
  • KarenMillen
    Organdie Plunge Collared Woven Maxi Dress
    £169.00 £118.30 ( -30 % off )
  • KarenMillen
    Petite Ombre Printed Mesh Ruched Long Sleeve Maxi Dress
    £99.00 £69.30 ( -30 % off )
  • KarenMillen
    Garden Floral Twill Collared Maxi Dress
    £159.00 £111.30 ( -30 % off )
  • KarenMillen
    Striped Bardot Knit Maxi Dress
    £119.00 £83.30 ( -30 % off )
  • KarenMillen
    Digital Ophelia Liquid Metallic Split Woven Maxi Dress
    £159.00 £111.30 ( -30 % off )
  • KarenMillen
    Digital Ophelia Floral Organdie High Neck Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Tailored Square Neck Full Skirted Midi Dress
    £199.00 £60.00 ( -70 % off ) OUTLET
  • PLUS SIZE
    KarenMillen
    Lydia Millen Plus Size Floral Silk Cotton Woven Shirt Dress
    £239.00 £167.30 ( -30 % off )
  • KarenMillen
    Tailored Structured Crepe Roll Neck Pencil Midi Dress
    £199.00 £139.30 ( -30 % off )
  • GEORGIA LOUISE EDIT
    KarenMillen
    Compact Stretch Tailored Midi Prom Dress
    £229.00 £160.30 ( -30 % off )
  • KarenMillen
    Compact Stretch Darted Tailored Blazer Mini Dress
    £189.00 £132.30 ( -30 % off )
  • KarenMillen
    Pleated Cape Sleeve Low Back Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Soft Tailored Halterneck Open Back Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • KarenMillen
    Polished Tailored Asymmetric Back Midi Dress
    £239.00 £167.30 ( -30 % off )
  • KarenMillen
    Soft Tailored One Shoulder Cape Sleeve Maxi Dress
    £259.00 £181.30 ( -30 % off )
  • KarenMillen
    Soft Pleated Lace Detail Woven Kimono Sleeve Maxi Dress
    £159.00 £111.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Cold Shoulder 3D Floral Applique Woven Maxi Dress
    £319.00 £223.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Hammered Satin Cowl Neck Woven Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Cotton Poplin Chain Halter Woven Midi Dress
    £119.00 £83.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Compact Stretch Tie Neck Full Skirted Midi Dress
    £239.00 £167.30 ( -30 % off )
  • KarenMillen
    Garden Floral Twill Bow Woven Prom Skirt
    £129.00 £103.20 ( -20 % off )
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Mono Fluid Stripe Cotton Mix Woven Maxi Halter Dress
    £169.00 £118.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Premium Linen Structured Pleated Bandeau Tailored Midi Pencil Dress
    £199.00 £139.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Scuba Drama Ruffle Hem Woven Maxi Dress
    £169.00 £118.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Ombre Floral Cowl Neck Woven Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Digital Ophelia Floral Organdie High Neck Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Floral Halter Neck Pleated Midi Dress
    £99.00 £69.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Guipure Lace High Neck Woven Midi Dress
    £259.00 £181.30 ( -30 % off )
  • KarenMillen
    Premium Linen Structured Pleated Bandeau Tailored Midi Pencil Dress
    £199.00 £139.30 ( -30 % off )
  • KarenMillen
    Hammered Satin Cowl Neck Woven Maxi Dress
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Garden Floral Twill Bow Detail Top
    £85.00
  • KarenMillen
    Compact Stretch Viscose One Shoulder Cape Maxi Dress
    £249.00 £75.00 ( -70 % off ) OUTLET
  • KarenMillen
    Spring Floral Tulle Plunge Mini Dress
    £119.00 £83.30 ( -30 % off )
  • KarenMillen
    Twill Prom Woven Midi Dress
    £139.00 £97.30 ( -30 % off )
  • KarenMillen
    Applique Spot Printed Halter Neck Woven Maxi Dress
    £179.00 £125.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Floral Applique Woven Strappy Maxi Dress
    £369.00
  • PETITE 5'3 AND UNDER
    KarenMillen
    Lydia Millen Petite Viscose Floral Border Print Maxi Dress
    £199.00 £139.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Compact Stretch Bow Tie Neck Full Skirted Midi Dress
    £239.00 £72.00 ( -70 % off ) OUTLET

Summer Occasion Dresses for Women