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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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  • La Femme 29873 Formal Prom Dress

    Burgundy La Femme 29873 Formal Prom Dress
     La Femme 29873 Formal Prom Dress
    Regular price $278.00
    $278.00 Sale price Regular price
  • La Femme 29870 Formal Prom Dress

    Hot Pink La Femme 29870 Formal Prom Dress
     La Femme 29870 Formal Prom Dress
    Regular price $318.00
    $318.00 Sale price Regular price
  • La Femme 29848 Formal Prom Dress

    Black La Femme 29848 Formal Prom Dress
     La Femme 29848 Formal Prom Dress
    Regular price $278.00
    $278.00 Sale price Regular price
  • La Femme 29785 Formal Prom Dress

    Black La Femme 29785 Formal Prom Dress
     La Femme 29785 Formal Prom Dress
    Regular price $318.00
    $318.00 Sale price Regular price
  • La Femme 29781 Formal Prom Dress

    Black La Femme 29781 Formal Prom Dress
     La Femme 29781 Formal Prom Dress
    Regular price $278.00
    $278.00 Sale price Regular price
  • La Femme 29774 Formal Prom Dress

    Black La Femme 29774 Formal Prom Dress
     La Femme 29774 Formal Prom Dress
    Regular price $478.00
    $478.00 Sale price Regular price
  • La Femme 29741 Formal Prom Dress

    Black La Femme 29741 Formal Prom Dress
     La Femme 29741 Formal Prom Dress
    Regular price $498.00
    $498.00 Sale price Regular price
  • La Femme 29735 Formal Prom Dress

    Dark Berry La Femme 29735 Formal Prom Dress
     La Femme 29735 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 29710 Formal Prom Dress

    Royal Purple La Femme 29710 Formal Prom Dress
     La Femme 29710 Formal Prom Dress
    Regular price $158.00
    $158.00 Sale price Regular price
  • La Femme 29707 Formal Prom Dress

    White/Gold La Femme 29707 Formal Prom Dress
     La Femme 29707 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 29686 Formal Prom Dress

    Black La Femme 29686 Formal Prom Dress
     La Femme 29686 Formal Prom Dress
    Regular price $478.00
    $478.00 Sale price Regular price
  • La Femme 29681 Formal Prom Dress

    Red La Femme 29681 Formal Prom Dress
     La Femme 29681 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 29650 Formal Prom Dress

    Black La Femme 29650 Formal Prom Dress
     La Femme 29650 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 29076 Formal Prom Dress

    Dark Berry La Femme 29076 Formal Prom Dress
     La Femme 29076 Formal Prom Dress
    Regular price $398.00
    $398.00 Sale price Regular price
  • La Femme 29020 Formal Prom Dress

    Neon Coral La Femme 29020 Formal Prom Dress
     La Femme 29020 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 29010 Formal Prom Dress

    Neon Coral La Femme 29010 Formal Prom Dress
     La Femme 29010 Formal Prom Dress
    Regular price $278.00
    $278.00 Sale price Regular price
  • La Femme 28984 Formal Prom Dress

    Black La Femme 28984 Formal Prom Dress
     La Femme 28984 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 28978 Formal Prom Dress

    Black La Femme 28978 Formal Prom Dress
     La Femme 28978 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 28944 Formal Prom Dress

    Black La Femme 28944 Formal Prom Dress
     La Femme 28944 Formal Prom Dress
    Regular price $278.00
    $278.00 Sale price Regular price
  • La Femme 28913 Formal Prom Dress

    Black/Gold La Femme 28913 Formal Prom Dress
     La Femme 28913 Formal Prom Dress
    Regular price $278.00
    $278.00 Sale price Regular price
  • La Femme 28719 Formal Jumpsuit

    Black La Femme 28719 Formal Jumpsuit
     La Femme 28719 Formal Jumpsuit
    Regular price $398.00
    $398.00 Sale price Regular price
  • La Femme 28677 Formal Prom Dress

    Black La Femme 28677 Formal Prom Dress
     La Femme 28677 Formal Prom Dress
    Regular price $318.00
    $318.00 Sale price Regular price
  • La Femme 28664 Formal Prom Dress

    Marine Blue La Femme 28664 Formal Prom Dress
     La Femme 28664 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price
  • La Femme 28628 Formal Prom Dress

    Deep Red La Femme 28628 Formal Prom Dress
     La Femme 28628 Formal Prom Dress
    Regular price $298.00
    $298.00 Sale price Regular price

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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