black backless formal dresses Maxi Dress Long Dress Theodore Maxi Dress Size 10 Unleash your inner goddess with our stunning Mermaid Style Dress Backless Dresses | Open &

A-line dresses gradually get wider toward the bottom to create the A-shape (theyre always wider than the shoulders at the edges of the skirt), whereas fit and flare styles flare out more dramatically right away (though the end result is still very similar)

The Brit looked smoldering at the Costume Institute Gala Benefit at the Metropolitan Museum of Art in New York City

All the elements of classic style make Katherine a party dress to rely on

Open Back Prom Dresses from Ellie Wilde You can't forget about the back

The model is 59, with a 33 bust, 24 waist & 36 hips she wears size S

Fully customisable in 15+ colours, meticulously designed in-house in Australia