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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.

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  • PLUS SIZE
    KarenMillen
    Plus Size Animal Print Georgette Embellished Woven High Neck Cape Blouse
    £159.00 £111.30 ( -30 % off )
  • KarenMillen
    Tulle Bandeau Tiered Midi Dress
    £139.00
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Animal Print Georgette Embellished Short Sleeve Woven Maxi Dress
    £329.00 £230.30 ( -30 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Figure Form Bandage Knit Asymmetric Strap Top
    £79.00 £55.30 ( -30 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Digital Ophelia Liquid Metallic Split Woven Maxi Dress
    £159.00 £127.20 ( -20 % off )
  • KarenMillen
    Floral Applique Structured Woven Mini Dress
    £129.00 £116.10 ( -10 % off )
  • KarenMillen
    Flower Feather Headband
    £59.00
  • KarenMillen
    Soft Tailored Cape Detail Mini Dress
    £199.00
  • GEORGIA LOUISE EDIT
    KarenMillen
    Ombre Floral Cowl Neck Woven Maxi Dress
    £129.00
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Blurred Floral Drama Woven Taffeta Maxi Dress
    £139.00
  • KarenMillen
    Rose Print Twill Collared Maxi Dress
    £159.00
  • KarenMillen
    Pleated Cape Sleeve Low Back Maxi Dress
    £129.00 £116.10 ( -10 % off )
  • KarenMillen
    Floral Jacquard Tailored Midi Pencil Dress
    £219.00
  • KarenMillen
    Georgette Pleated Bustier Cape Back Woven Maxi Dress
    £199.00 £159.20 ( -20 % off )
  • KarenMillen
    Detailed Headband Fascinator
    £49.00 £39.20 ( -20 % off )
  • KarenMillen
    Quill Detailed Asymmetrical Fascinator
    £149.00 £119.20 ( -20 % off )
  • KarenMillen
    Disk Bow Detailed Fascinator
    £59.00 £47.20 ( -20 % off )
  • KarenMillen
    Asymmetric Disc Headband Fascinator
    £99.00 £79.20 ( -20 % off )
  • KarenMillen
    Soft Tailored Colourblock Tailored Bandeau Jumpsuit
    £219.00 £175.20 ( -20 % off )
  • KarenMillen
    Digital Ophelia Organdie High Neck Maxi Dress
    £119.00
  • MATCHING SET
    KarenMillen
    Soft Tailored Single Breasted Blazer
    £229.00
  • KarenMillen
    Striped Bardot Knit Maxi Dress
    £119.00
  • KarenMillen
    Garden Floral Twill Collared Maxi Dress
    £159.00
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Printed Pleated Yoryu Crinkle Woven Maxi Dress
    £199.00
  • KarenMillen
    Soft Tailored Halterneck Open Back Maxi Dress
    £199.00 £159.20 ( -20 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Cold Shoulder 3D Floral Applique Woven Maxi Dress
    £319.00
  • KarenMillen
    Soft Tailored Cape Detail Tailored Midi Dress
    £219.00
  • KarenMillen
    Floral Tulle Woven Maxi Skirt
    £85.00
  • KarenMillen
    Cutwork Embroidery Woven Midi Prom Dress
    £259.00
  • KarenMillen
    Compact Stretch Darted Tailored Blazer Mini Dress
    £189.00 £151.20 ( -20 % off )
  • KarenMillen
    Pleated Floral Bodice Detail Woven Maxi Dress
    £159.00
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Digital Ophelia Floral Organdie High Neck Maxi Dress
    £129.00
  • PETITE 5'3 AND UNDER
    KarenMillen
    Lydia Millen Petite Viscose Floral Border Print Maxi Dress
    £199.00
  • KarenMillen
    Drama Taffeta Rosette Woven Mini Dress With Bow Detail
    £189.00 £170.10 ( -10 % off )
  • TALL 5'10 AND OVER
    KarenMillen
    Tall Pleated Cape Sleeve Low Back Maxi Dress
    £129.00 £109.65 ( -15 % off )
  • KarenMillen
    Placed Chain Cotton Sateen Shirt Dress
    £149.00
  • KarenMillen
    Premium Tailored Linen Asymmetric Shoulder Full Midi Dress
    £279.00 £223.20 ( -20 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Floral Organdie Woven Midi Shirt Dress
    £169.00
  • KarenMillen
    Petite Ombre Printed Mesh Ruched Long Sleeve Maxi Dress
    £99.00 £79.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Premium Linen Structured Pleated Bandeau Tailored Midi Pencil Dress
    £199.00 £159.20 ( -20 % off )
  • GEORGIA LOUISE EDIT
    KarenMillen
    Compact Stretch Tailored Midi Prom Dress
    £229.00
  • KarenMillen
    Tailored Structured Crepe Roll Neck Pencil Midi Dress
    £199.00 £139.30 ( -30 % off )
  • KarenMillen
    Floral Applique Structured Woven Mini Dress
    £99.00 £84.15 ( -15 % off )
  • PLUS SIZE
    KarenMillen
    Lydia Millen Plus Size Viscose Floral Print Woven Maxi Dress
    £199.00 £159.20 ( -20 % off )
  • KarenMillen
    Bandage Figure Form Knit Woven Cape Detail Maxi Dress
    £129.00 £103.20 ( -20 % off )
  • PLUS SIZE
    KarenMillen
    Lydia Millen Plus Size Floral Silk Cotton Woven Shirt Dress
    £239.00 £191.20 ( -20 % off )
  • KarenMillen
    Soft Pleated Lace Detail Woven Kimono Sleeve Maxi Dress
    £159.00 £127.20 ( -20 % off )
  • KarenMillen
    Applique Spot Printed Halter Neck Woven Maxi Dress
    £179.00 £143.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Floral Jacquard Corseted Woven Maxi Dress
    £229.00 £183.20 ( -20 % off )
  • KarenMillen
    Hammered Satin Cowl Neck Woven Maxi Dress
    £129.00 £103.20 ( -20 % off )
  • KarenMillen
    Premium Linen Structured Pleated Bandeau Tailored Midi Pencil Dress
    £199.00 £159.20 ( -20 % off )
  • KarenMillen
    Polished Tailored Asymmetric Back Midi Dress
    £239.00 £191.20 ( -20 % off )
  • KarenMillen
    Garden Floral Twill Bow Woven Prom Skirt
    £129.00 £90.30 ( -30 % off )
  • KarenMillen
    Garden Floral Twill Bow Detail Top
    £85.00
  • KarenMillen
    Floral Georgette Halter Neck Pleated Midi Dress
    £99.00 £79.20 ( -20 % off )
  • GEORGIA LOUISE EDIT
    KarenMillen
    Silk Cotton Trailing Floral Strappy Midi Dress
    £199.00 £159.20 ( -20 % off )
  • KarenMillen
    Floral Georgette Woven Midi Dress
    £99.00 £79.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Floral Halter Neck Pleated Midi Dress
    £99.00 £79.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Ombre Floral Cowl Neck Woven Maxi Dress
    £129.00 £103.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Printed Pleated Yoryu Crinkle Woven Maxi Dress
    £199.00 £159.20 ( -20 % off )
  • PLUS SIZE
    KarenMillen
    Plus Size Guipure Lace High Neck Woven Midi Dress
    £259.00 £207.20 ( -20 % off )
  • KarenMillen
    Floral Print Tulle Layered Off The Shoulder Maxi Dress
    £149.00 £119.20 ( -20 % off )
  • KarenMillen
    Cold Shoulder 3D Floral Applique Woven Maxi Dress
    £319.00 £255.20 ( -20 % off )
  • KarenMillen
    Spring Floral Tulle Plunge Maxi Dress
    £159.00 £127.20 ( -20 % off )
  • KarenMillen
    Twill Prom Woven Midi Dress
    £139.00 £111.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Hammered Satin Cowl Neck Woven Maxi Dress
    £129.00 £103.20 ( -20 % off )
  • PETITE 5'3 AND UNDER
    KarenMillen
    Petite Floral Applique Woven Strappy Maxi Dress
    £369.00

Summer Occasion Dresses for Women