American Hustle was a huge success for lots of reasons, and one of them was the authentic costumes, particularly the plunging necklines. Amy Adams and Jennifer Lawrence wore some amazing vintage and period inspired 70's dresses.
The plunging neckline, is a type of the famous V neckline. It is the most over the top and sexy look.
These were really popular in the 70s, which is why you see Amy Adams wearing them. But, they never really went out of style.
You see them all the time at two types of events.
1. Anything with celebrities. Celebrities love the plunging neckline. If you turn on the Country Music Awards, American Music Awards, Grammys, Academy Awards, or any sort of entertainment show, you will see dozens of styles. They look graceful, glamorous and sexy.
2. Any sort of fashionable club. Nightclubs are the other place you will find these deep plunging necklines. That's because they are stylish, and you can wear them with jeans or skirts. They work so well with everything.
You have a few different options.
The basic plunging neckline. This one is is something that you might see on a woman who is semi-conservative, yet still wants to be sexy. It can be found in all sorts of cuts.
The deeper plunge. This is the more common type. It is sexy. It can be either draped, straight, or tight. But the main factor is that it is sexy.
The super deep, right on the edge, Jennifer Lopez Grammy style plunge. This is the type that you'll want to be careful with. You might want to wear tape to keep every hing where it needs to be. But, this is the sexiest look you'll ever see. An awesome look.
Here are some choices. You might want to pick up some flash tape if you are going to get a super deep plunging neckline.
This is a classic, yet sexy look. It is something that goes well with jeans, a skirt, really a versatile look.
This is a super hot backless design.
It is the ultimate plunge. An open front halter top design. You can get this in two different colors.
Here is an article on Amy Adams vintage looks.
http://nymag.com/thecut/2013/12/amy-adams-didnt-do-boob-tape-in-american-hustle.html