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Long Formal Dresses and Formal Evening Gowns

Look and feel your best in a beautiful formal dress by Simply Dresses. Whether you want to be simply stunning or elegantly low-key, find the formal wear that’s just right for you in this collection of long evening gowns and formal dresses. 
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  • Bell Sleeve Long Two Piece Prom Dress

    Black Bell Sleeve Long Two Piece Prom Dress
     Bell Sleeve Long Two Piece Prom Dress
    Regular price $69.00
    $69.00 Sale price Regular price $199.00
  • Embroidered Top Two Piece Mermaid Gown

    Black Embroidered Top Two Piece Mermaid Gown
     Embroidered Top Two Piece Mermaid Gown
    Regular price $69.00
    $69.00 Sale price Regular price $199.00
  • Unique Mermaid Prom Dress With Beaded Bodice

    Blossom Unique Mermaid Prom Dress With Beaded Bodice
     Unique Mermaid Prom Dress With Beaded Bodice
    Regular price $69.00
    $69.00 Sale price Regular price $199.00
  • Floral-Print Skirt and Lace-Top Black Prom Dress

    Black Floral-Print Skirt and Lace-Top Black Prom Dress
     Floral-Print Skirt and Lace-Top Black Prom Dress
    Regular price $69.00
    $69.00 Sale price Regular price $199.00
  • Halter Two-Piece Long Lace Prom Dress

    Aqua Blue Halter Two-Piece Long Lace Prom Dress
     Halter Two-Piece Long Lace Prom Dress
    Regular price $69.00
    $69.00 Sale price Regular price $199.00
  • Simple Long Formal Dress 8259

    Black Simple Long Formal Dress 8259
     Simple Long Formal Dress 8259
    Regular price $69.00
    $69.00 Sale price Regular price $199.00
  • Long La Femme Gown 20003

    Wisteria Long La Femme Gown 20003
     Long La Femme Gown 20003
    Regular price $39.00
    $39.00 Sale price Regular price $482.00
  • Long La Femme Gown 21148

    Light Mint Long La Femme Gown 21148
     Long La Femme Gown 21148
    Regular price $39.00
    $39.00 Sale price Regular price $378.00
  • Long La Femme Gown 21145

    Pale Purple Long La Femme Gown 21145
     Long La Femme Gown 21145
    Regular price $39.00
    $39.00 Sale price Regular price $350.00
  • Long La Femme Gown 21123

    Black Long La Femme Gown 21123
    Electric Blue Long La Femme Gown 21123
    Regular price $39.00
    $39.00 Sale price Regular price $398.00
  • Long La Femme Gown 21120

    Coral Long La Femme Gown 21120
     Long La Femme Gown 21120
    Regular price $39.00
    $39.00 Sale price Regular price $478.00
  • Long La Femme Gown 21116

    Violet Long La Femme Gown 21116
     Long La Femme Gown 21116
    Regular price $49.00
    $49.00 Sale price Regular price $498.00
  • Long La Femme Gown 21103

    Crimson Long La Femme Gown 21103
    Gunmetal Long La Femme Gown 21103
    Regular price $39.00
    $39.00 Sale price Regular price $318.00
  • Long La Femme Gown 21079

    Navy Long La Femme Gown 21079
     Long La Femme Gown 21079
    Regular price $39.00
    $39.00 Sale price Regular price $398.00
  • Long La Femme Gown 21006

    Navy Long La Femme Gown 21006
     Long La Femme Gown 21006
    Regular price $39.00
    $39.00 Sale price Regular price $298.00
  • Long La Femme Gown 20985

    Lavender Long La Femme Gown 20985
    White Long La Femme Gown 20985
    Regular price $49.00
    $49.00 Sale price Regular price $398.00
  • Long La Femme Gown 20930

    Caribbean Green Long La Femme Gown 20930
     Long La Femme Gown 20930
    Regular price $39.00
    $39.00 Sale price Regular price $378.00
  • Long La Femme Gown 20925

    Peacock Long La Femme Gown 20925
     Long La Femme Gown 20925
    Regular price $39.00
    $39.00 Sale price Regular price $598.00
  • Long La Femme Gown 20921

    Caribbean Green Long La Femme Gown 20921
     Long La Femme Gown 20921
    Regular price $49.00
    $49.00 Sale price Regular price $378.00
  • Long La Femme Gown 20903

    Electric Blue Long La Femme Gown 20903
     Long La Femme Gown 20903
    Regular price $39.00
    $39.00 Sale price Regular price $338.00
  • Long La Femme Gown 20826

    Electric Blue Long La Femme Gown 20826
     Long La Femme Gown 20826
    Regular price $39.00
    $39.00 Sale price Regular price $398.00
  • Long La Femme Gown 20784

    Aquamarine Long La Femme Gown 20784
     Long La Femme Gown 20784
    Regular price $39.00
    $39.00 Sale price Regular price $450.00
  • Long La Femme Gown 20762

    Aqua Long La Femme Gown 20762
     Long La Femme Gown 20762
    Regular price $39.00
    $39.00 Sale price Regular price $438.00
  • Long La Femme Gown 20743

    Blush Long La Femme Gown 20743
     Long La Femme Gown 20743
    Regular price $49.00
    $49.00 Sale price Regular price $450.00

If your style of formal wear includes a refined and understated look, browse classic cap-sleeve lace dresses and princess-cut v-neck jersey dresses. Prefer a bold and dramatic vibe for your formal prom dress or long evening gown? Try an open-back formal gown in a vibrant, rich jewel tone. Either way, Simply Dresses aims to please with this versatile assortment of formal dresses. Looking for a formal dress that is short? Shop Simply Dresses' collection of short formal dresses here.

When Should I Wear a Formal Dress?

Wear a formal dress that shows off your personal style for any special event that has a formal attire dress code. Browse these evening gowns to find a variety of long formal dress styles in many colors that are captivating, as well as sophisticated, for formal events such as:

- Black-tie or formal weddings
- Charity events
- Dinner parties
- Galas
- Holiday parties
- Military balls
- Pageants
- Prom

Chic high-low evening dresses and glamorous off-the-shoulder formal dresses are perfect for dress-to-impress events. Gleaming satin formal gowns or flowing long chiffon formal dresses are lovely for black-tie occasions. A-line formal dresses and fitted long lace dresses with a dash of beading are beautiful for country club venues or destination beach weddings. In this collection of evening gowns, find captivating formal dresses that will reflect your personality for every elegant occasion on your social calendar.

Whether your style says “classic sophistication” or “relaxed and trendy,” here you can choose from gorgeous formal prom dresses and elegant evening gowns in a wide variety of colors, styles, and fabrics. From flattering a-line formal dresses and empire-waist dresses to flowing chiffon evening dresses and long mermaid gowns, find a glamorous evening dress that fits your figure as well as your style. In rich jewel tones, soft pastels, or warm neutral hues, the evening dresses in this selection are sure to offer just the right shade to suit you and the formality of your event.

To combine comfort and style at your next black-tie event, choose from these evening dresses and formal dresses with cap sleeves, short sleeves, or long sleeves that provide chic coverage. Three-quarter-length bell sleeves, flutter sleeves, and elbow-length sleeves add a touch of vintage elegance to an evening dress. There are long evening gowns and formal dresses with exquisite sheer panels or feminine ruffled flounces that flatter and showcase your unique style.

Love to shine in your formal wear, but glitz and flash aren’t your style? Browse the one-shoulder evening dresses and formal gowns with a dash of glitter or a sprinkling of sequins for just a hint of subtle sparkle. Feeling confident? Spice up your formal evening look with a dress that has cut outs or an open back. Choose your next long evening gown from this assortment at Simply Dresses to look and feel fabulous while highlighting your style with natural, understated beauty or all-out glamour.

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