The invite may say 'optional,' but opting for high glamour has always won out. When that really ritzy gala or wedding comes your way, you’ll do well to slip into this chic dress that offers all the classic elements of elegance. Black lace cap sleeves and a lacy back meet a satiny A-line bodice, complete with sweetheart neckline for the quintessential evening look. To top it off, a black rhinestone-buckle belt keeps you dazzling as the toasts mount and the canapes disappear. Pair it with bright jewels to dazzle in the dark. Whether you are the guest of honor or just an honored guest, this is a dress that doesn’t need a 'plus one.'