sleeveless cocktail dresses Prettygarden Womens Formal Short Summer Boat Neck A Line Elegant Mini Party Dress, Women's, Size: 2XL, Black adding a contemporary edge while assuring fluid motion in walking or dancing A-Line Princess Sweetheart Ruffles Sleeveless

Attending the event alongside Sienna Miller, she wore a black long-sleeve maxi-length dress, which features a subtle keyhole cut-out on the neck, and she finished off her attire with a fall must-have a pair of leather heeled knee-high boots

Bustier Seamed Bodice: The bustier-seamed bodice and pleated overlay detail create a structured, sexy and chic look

Below, ELLE got a first look at new interviews with the designers behind Dianas most memorable gownsand an exclusive glimpse of never-before-seen sketches of those looks

From metallic heels to shimmering accessories, this trend ensures youll be the brightest star in the crowd

It was not surprising to find the idea subverted by the punk movement in the 1970s, who teamed it with clunky boots and torn tights, giving the dress a far less demure appeal