Whether it's your sorority's formal or you are a guest at a fraternity formal, finding the perfect dress requires a lot of exploring and a whole lot of patience.

You know of the typical H&M, Forever 21, and Express options, but everyone knows those stores are a hit and miss, but what else is out there?

Little did you know that there are multiple online stores that offer a wide array of dresses varying in different colors, style, silhouettes/fit, etc. Attending a formal coming up with nothing to wear? Don't fret - from Nasty Gal to REVOLVE - you can find the ideal dress perfect for you, your personality, and your body - plus, they're inexpensive!

1. Nasty Gal

Around 10 years ago, Sophia Amoruso founded Nasty Gal from her San Francisco apartment, and today, it is a worldwide powerhouse when it comes to trendy clothing for the girls who have the confidence to be themselves.

2. Dainty Hooligan

Dainty Hooligan is a women's online fashion and clothing boutique carrying the hottest trends and unique fashion finds at unbeatable prices. They have an assortment of dresses for every occasion in an array of styles.

3. Lulus

Lulus is an online destination for chic and on-trend fashion with a goal to provide a sophisticated, feminine, inspired and modern collection full of event-ready dresses, party-perfect garments and apparel for any fashionista. Speaking as a past customer, Lulus has it all when it comes to needing a dress for a particular occasion.

4. Tobi

Tobi is an online-only fast-fashion retailer who designs, produces, and sells their products globally - and exclusively - on tobi.com. At Tobi, every detail matters and their prices are exquisite. They keep up with all the hot silhouettes, fabrics, colors, and styles.

5. Windsor

Windsor's mission is "to create an oasis that inspires and empowers women" and have been "dressing women up" since 1937. Windsor makes every woman feel beautiful and helps capture your best qualities from their array of dresses in all different styles, fabrics, colors, etc.

6. REVOLVE

REVOLVE is an online top designer clothing brand with brands like Alice + Olivia, Halston Heritage, kate spade new york, Free People, Joie and more. They carry over 500 men and women brands in the major areas of apparel, accessories, and shoes. With having that many brands, there are an unlimited amount of options when it comes to formal dresses with a variety of sleeve lengths, fit, and lengths to choose from.