That is a style characterized by a cut that comes more or less straight down just inside the shoulders for a short run, then continues in a V cut, often bowing slightly inward. It can be very flattering with a push up bra. Of course, this is a guy's point of view.
Round Neckline, Square Neckline, U Shape, V Shape Neckline and Sabrina Neckline
Bateau neckline
Neckline refers to the height of the collar or neck area of a shirt or article of clothing below the chin. A high neckline might include a turtleneck while a low neckline could be a V-neck.
décolleté
Fichu
A woman or girl's neckline should be no lower than two finger breadths below the collarbone. http://www.uptowngaleria.com/jewelry.html
A Queen Anne neckline my research is suggesting. I'm looking for short dresses with the same neckline.
V-neck
It is the low neckline of a female garment.
A fichu
Another name for a boat neckline is a "bateau neckline." This style features a wide, shallow cut that extends horizontally across the collarbone, often revealing the shoulders. It is a popular choice in both casual and formal garments, providing an elegant and classic look.
A cowl neckline is characterized by its soft, draped fabric that creates a loose, flowing effect around the neckline. This design often features extra fabric that falls or folds in a way that adds volume and depth, giving it a relaxed and elegant appearance. Cowls can vary in depth and shape, making them versatile for both casual and formal attire. This neckline is often flattering, as it can soften the silhouette and enhance the overall femininity of an outfit.