Browse our large selection of elegant long prom dresses, and find the perfect long formal dresses for your prom. At PromGirl you will find many long prom dresses and gowns from the top formal dress designers and manufacturers.  A long dress makes an elegant statement at any formal event whether it is prom, a formal dance, or wedding. Shop our huge selection of long dresses, and you will find long elegant dresses priced to fit every budget. Whatever the event you are looking for, we have your perfect long dress.

In Stock Buy CQ-ISD3172 at PromGirl
  • Black

Long V-Neck Open Back Dress

$149.00 CQ-ISD3172
In Stock Buy Floor Length Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Royal
  • Black

Strapless Evening Gown JVN by Jovani

$278.00 JO-JVN-JVN90365
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Red
  • Pink
  • Coral

Long Strapless Prom Gown

$179.00 DQ-8693
In Stock Buy Long One Shoulder Dress at PromGirl
  • Black
  • Plum
  • Brown

One Shoulder Prom Gown

$99.00 DQ-8324
* Products with an "in stock" banner have at least some size and color combinations ready to ship immediately. Available sizes and colors may be limited due to seasonality. Please read our complete availability policy for more information.