Fanservice, they fit the trope in different ways with Lisseth being openly seductive, while Scarlet serves as The Hero's Love Interest
Some white tie functions also request that the women wear long gloves past the elbow
Its a great way to use leftovers too
In some cases, a sophisticated cocktail dress can be appropriate for a formal event, especially if the invitation specifies black tie optional or formal attire. However, if the event is strictly black tie, its best to err on the side of caution and opt for a floor-length gown
You can sport halter necks on any kind of outfit
The thick shoulder straps have a gathering detail to match the gathered waistband which then flows into the clean lines of the criss-cross back straps, all playing into the sexy but timeless design