forever 21 black dress Women's Bodycon Tube Mini in Black, 3X Model is 510 and wearing a Size 1X Forever 21 Womens Satis Shift
Description
Side slit for added sexiness and freedom of movement

Features include a square neckline, dropped shoulder, and chest cup for a flattering fit, as well as a corset waist and twisted skirt for added elegance

It fits snugly at the waist before flaring out, allowing for curves and creating balance

You could even wear it many times, even as a guest
That being said, figuring out what to wear to a formal event can be a little daunting