Why it's great: There are literally endless designs to choose from (different lengths, necklines, colors, sizes, and price points), and you'll be able to see review photos of other people actually wearing the dresses. Plus, if you're a Prime member, a lot of the dresses can be shipped to you within a couple days!
Styles we dig: floral lace maxi dress for $44.95 (sizes S–3X, three colors), A-line high-neck beaded evening gown for $109 (sizes 2–26, 13 colors), two-piece long sleeve dress for $78.99+ (sizes 2-26, 44 colors), and embroidered strapless dress for $58.79+ (sizes 2–24, four colors)
Starting at $10
Shipping: free two-day shipping for Amazon Prime members on items that qualify
Get the beaded high-neck lace dress for $109 (sizes 2–26, 13 colors) or the spaghetti strap sequin mermaid gown for $73.99 (sizes S–XXL).