open back halter dress Long by Cinderella Divine 5012 Classy meets sexy with this backless halter babydoll dress Open Back Halter Dress XS

Colors That Read as Formal Deep jewel tones: emerald, navy, burgundy, royal purple Classic black a black prom dress in floor-length satin is always formal-appropriate Metallics: gold, silver, champagne Rich ivory and white Colors That Work for Semi-Formal Pastels: blush, lavender, powder blue, mint Bright bold tones: coral, fuchsia, yellow Two-tone or printed fabrics in structured silhouettes A purple prom dress in deep plum reads very formal, while a soft lilac in a midi length fits perfectly into a semi-formal setting

To go along with her look, she also showed off her yin and yang-inspired fresh nail set

Your search for the perfect sexy plus-size cocktail party dress is finally over

Our model is wearing a size Extra-Small

An invitation that calls for "cocktail attire" can be a lifesaver for impromptu events and soirees if you have two or three unique semi formal dresses in your closet