• Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Mauve
  • Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Royal Blue
  • Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Navy
  • Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Mocha
  • Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Charcoal
  • Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Black
  • Mother of the Bride Dresses Short Sleeve Formal Mother of the Bride Dress Eggplant
  • A formal mermaid fitted evening dress in a stunning rose gold hue, featuring a sleek silhouette that elegantly flares at the bottom, adorned with intricate detailing and a sophisticated neckline.
  • Formal Dress Formal Mermaid Fitted Evening Dress Navy
  • A sleek black mermaid fitted evening dress elegantly hugs the silhouette, featuring a sophisticated neckline and a dramatic flared hem that cascades to the floor.
  • A formal mermaid fitted evening dress in charcoal, featuring a sleek silhouette that elegantly hugs the body, with a flared bottom and intricate detailing.
  • A formal mermaid fitted evening dress in a rich eggplant hue, featuring a sleek silhouette that accentuates the curves, with elegant detailing and a flowing train.
  • A stunning formal mermaid fitted evening dress in a luxurious gold hue, featuring a sleek silhouette that elegantly hugs the body and flares out at the bottom, perfect for a glamorous night out.
  • Prom Dresses Sparkling Long Formal Ball Gown Black
  • A stunning mauve long formal ball gown adorned with sparkling embellishments, elegantly flowing to the floor, perfect for a glamorous evening event.
  • A stunning charcoal long formal ball gown adorned with sparkling embellishments, elegantly flowing to the floor, perfect for a glamorous evening event.
  • A stunning navy blue long formal ball gown adorned with sparkling embellishments, elegantly flowing to the floor, perfect for a glamorous evening event.
  • A stunning periwinkle long formal ball gown adorned with sparkling embellishments, elegantly flowing to the floor, perfect for a glamorous evening event.
  • Formal Dresses Long Sleeve Formal Evening Party Dress Black
  • Formal Dresses Long Formal Mother of the Bride Dress  Black
  • Formal Dresses Long Formal Mother of the Bride Dress Charcoal
  • Formal Dresses Long Formal Mother of the Bride Dress Mauve
  • Formal Dresses Long Formal Mother of the Bride Dress  Eggplant
  • Quinceniera Dresses Long Quinceanera Dress Ball Gown Gold
  • Kos Couture DD326 Long Quinceanera Dress Ball Gown
  • Quinceniera Dresses Long Cap Sleeve Quinceanera Ball Gown Hunter Green
  • A stunning burgundy one-shoulder long formal ball gown, elegantly draping to the floor, perfect for evening events.
  • Formal Dresses One Shoulder Long Formal Ball Gown Evening Dress Black
  • A stunning emerald green one-shoulder long formal ball gown, elegantly draping to the floor, perfect for evening events.
  • A stunning one-shoulder long formal ball gown in a rich French navy color, elegantly draping to the floor with a flowing silhouette, perfect for evening events.
  • A stunning off-white one shoulder long formal ball gown, elegantly draping to the floor, perfect for evening events.
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Burgundy
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Charcoal
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Navy
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Black
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Royal
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Silver
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Mocha
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Plum
  • Mother of the Bride Dresses Short Sleeve Mother Of The Bride Evening Dress Mauve
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Black
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Navy
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Charcoal
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Plum
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Mauve
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Royal
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Burgundy
  • Formal Dresses Long Formal Dress Plus Size Evening Gown Ivory
  • Prom Dresses Corset Prom Party Dress Formal Ball Gown Black
  • A stunning fuchsia corset prom party dress featuring intricate detailing, designed for formal occasions, with a flowing ball gown silhouette that exudes elegance and sophistication.
  • A stunning navy corset prom party dress featuring intricate detailing, designed for formal occasions, with a flowing ball gown silhouette that exudes elegance and sophistication.
  • A stunning mauve corset prom party dress featuring intricate detailing, designed for formal occasions, with a flowing ball gown silhouette that exudes elegance and sophistication.
  • Corset Strapless Wedding Dress Off White
  • Prom Dresses Corset Prom Party Dress Formal Ball Gown Hunter Green
  • Wedding Dresses Long Spaghetti Strap Wedding Dress Off White
  • Sold out
  • Wedding Dresses Plus Size Long Off Shoulder Wedding Gown Off White
  • Sold out
  • Wedding Dresses Long Sleeve Wedding Dress Off White
  • Sold out
  • Wedding Dresses Lace Long Off Shoulder Mermaid Wedding Dress Off White
  • Wedding Dresses Simple Long Spaghetti Strap Wedding Dress  Off White
  • Sold out
  • Wedding Dresses Long Cap Sleeve Lace Wedding Dress Off White
  • Formal Dresses Long Formal Stretch Evening Long Sleeve Dress Royal Blue
  • Formal Dresses Long Formal Stretch Evening Long Sleeve Dress Burgundy
  • Formal Dresses Long Formal Stretch Evening Long Sleeve Dress Black
  • Formal Dresses Long Formal Stretch Evening Long Sleeve Dress Plum
  • Formal Dresses Long Formal Stretch Evening Long Sleeve Dress Navy
  • Kos Couture DD1313 Long Formal Low Back Prom Dress
  • Prom Dresses Long Formal Low Back Prom Dress Purple
  • A stunning long formal low back prom dress in black, featuring a sleek silhouette that elegantly flows to the floor, showcasing a sophisticated design with a deep V-back and delicate straps.
  • A stunning long formal low back prom dress in vibrant fuchsia, featuring a sleek silhouette that elegantly flows to the floor, showcasing a sophisticated design perfect for special occasions.
  • A stunning long formal low back prom dress in deep navy, featuring elegant draping and a fitted silhouette that accentuates the figure, perfect for a glamorous evening event.
  • Cocktail Dresses Bodycon Bandage Short Feather Formal Cocktail Dress Green
  • Cocktail Dresses Bodycon Bandage Short Feather Formal Cocktail Dress Red
  • Cocktail Dresses Bodycon Bandage Short Feather Formal Cocktail Dress Bronze

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.