black backless halter dress Simple Mermaid Long Prom Dark Green / 10 high slit at the front Women's Sexy V Neck Halter

Contrast detail, square neckline, fixed straps, exposed zip closure at side

The cowl front contours effortlessly while side cutouts and a tie-back detail bring that glam-but-effortless vibe

For this look, I kept things classic with low heels (chic and comfortable) and a layered black blazer, which can be worn over your shoulders, for those cooler summer nights

Ideal for those seeking a unique, gothic-inspired look that stands out in any formal occasion

Once you've got that figured out, a nice pair of dress shoes will complete the look

The actress attended the 2018 InStyle awards to support her hairstylist, Chris McMillan, wearing a figure-hugging gown that featured a slit in the back