Search from our 2020 Prom Dresses from our top formal dress designer. Here are some of the prom dress trends for 2020. Diamond lace is popular this season along with two piece prom dresses. Two piece prom dresses burst upon the scene in 2016 despite being banned by most schools back in the early 2000's. Shiny fabrics with glittering accents and long formal dresses with pockets are still hot! Check out all of our 2020 prom dresses below!