It's called ...
Busty, Beautiful Hourglass Beauty in Teddy or Low-Cut Dress
It's the reason why hourglass curves like hers, with amble bust and a beautiful profile are just the hottest babes on earth.
You have to have the full figure -- including a nice pair of hips and cock engulfing lower body -- to match the breasts and profile.
Put in a low-cut Teddy, with matching bottoms, or a Low-Cut Dress, and it's heaven.
The most erotic experience I've ever had with my wife was 2 hours at the Opera, not able to touch her in a similar dress to that black one
(although her's was a tad little longer, but the side-cut slits went right up to the bottom of her ass).