alex perry white dress Lace Asymmetric Mini it has an asymmetric sweetheart neckline with one strap elegantly draping off the shoulder and a corset Alex Perry Halterneck Draped Sequined
Description
You should also consider the time that a wardrobe change will take
It fastens with a concealed back zipper

Adaptive dresses are designed with ease of wear in mind, making them ideal for maintaining dignity and comfort

Pure silk fabric with a natural sheen and fluid drape

Now, onto the terminology

And more royal fashion in the Fashion Rules exhibition here
