• Kos Couture DD1367 Long Stretch Formal Off Shoulder Dress
  • Formal Dresses Long Stretch Formal Off Shoulder Dress Navy
  • Formal Dresses Long Stretch Formal Off Shoulder Dress Burgundy
  • Formal Dresses Long Stretch Formal Off Shoulder Dress French Periwinkle French Periwinkle
  • Sale
  • Prom Dresses Fully Sequined Corset Mermaid Prom Dress Silver
  • Sale
  • Prom Dresses Long Prom One Shoulder Formal Ball Gown  Black
  • Kos Couture DD1370 Long Prom One Shoulder Formal Ball Gown
  • Sale
  • Cocktail Dresses Short Cocktail Dress Compression Stretch Ruffle Detail Navy
  • Cocktail Dresses Short Cocktail Dress Compression Stretch Ruffle Detail Royal
  • Cocktail Dresses Short Cocktail Dress Compression Stretch Ruffle Detail Emerald Green
  • Cocktail Dresses Short Cocktail Dress Compression Stretch Ruffle Detail Burgundy
  • Sale
  • Homecoming Dresses Short Sweet Heart Tiered Homecoming Prom Dress Navy
  • Homecoming Dresses Short Sweet Heart Tiered Homecoming Prom Dress Black
  • Sale
  • Formal Dresses Long Formal Ball Gown with Statement Bow Eggplant
  • Sale
  • Formal Dresses Sculpted Shoulder Formal Evening Dress  Navy
  • Sale
  • Formal Dresses Long Corset Formal Dress Puff Sleeves Black
  • Sale
  • Formal Dresses Luxury Couture Sculpted Shoulder Black Dress Black
  • Sale
  • Formal Dresses Luxury Couture Beaded Black Formal Dress Black
  • Sale
  • Formal Dresses Sculpted Shoulder Black Tie Evening Dress  Black
  • Sale
  • Cocktail Dresses Animal Print Plunge Fit and Flare Mini Dress with Wide Belt Animal Print
  • Sold out
  • Prom Dresses Long Mermaid Formal Beaded Prom Dress Midnight Ombre
  • Sold out
  • Cocktail Dresses Sleeveless Fit and Flare Mini Dress with Gold Lion Belt Detail Black
  • Sold out
  • Prom Dresses One Shoulder Ruffled Chiffon Evening Gown Black
  • Sold out
  • Prom Dresses Strapless Satin Column Gown with Crystal Lace Detailing Ivory
  • Sold out
  • Prom Dresses Strapless Black Embellished Mesh Gown with Geometric Beading Black/Nude
  • Sold out
  • Cocktail Dresses Strapless Yellow Pleated Mini Dress with Belted Waist Yellow
  • Sold out
  • Wedding Dresses  High Neck Lace Fitted Ivory Gown with Sheer Floral Detail Ivory
  • Sold out
  • Prom Dresses Sequin Tiered V Neck Maxi Dress Nude/Champagne
  • Sold out

Collection: Formal Dresses

At KOS Couture, our Formal Dress Collection redefines modern elegance with a handpicked selection of designer-inspired styles made for life’s most special moments. Whether you’re attending a black-tie gala, a wedding, or an evening celebration, our formal dresses are designed to help you make a lasting impression. 

From timeless evening dresses that exude classic sophistication to modern formal wear crafted with trending details like sequins, lace, and sleek satin finishes — every piece reflects impeccable craftsmanship and feminine grace.

We also offer a beautiful selection for the Mother of the Bride and Groom, ensuring every mother shines with confidence and poise on the big day. Available in both regular and plus sizes, our collection embraces and celebrates every body type with flattering silhouettes that enhance your natural shape.

Discover elegant A-line, mermaid, fit-and-flare, and off-the-shoulder formal dresses in rich tones and luxurious fabrics. At KOS Couture, sophistication isn’t just a look — it’s a feeling.