Poppy Delevigne wearing Roberto Cavalli in Milan.
(Credit: Stefania D'Alessandro/WireImage)
Daria Stokous in Paris.
(Credit: Saskia Lawaks)
Amber Le Bon in a Roberto Cavalli dress in London.
(Credit: © Reimschuessel/Splash News/Corbis)
Naomi Campbell wearing Roberto Cavalli in London.

Liya Kedebe in Paris.
(Credit: Saskia Lawaks)

Coco Rocha wearing a Roberto Cavalli suit in Milan.

Suki Waterhouse wearing Burberry in London.
(Credit: David M. Benett/Getty Images for The Serpentine)
Doutzen Kroes wearing Calvin Klein Collection in Los Angeles.
(Credit: © 2014 WireImage/wireimage.com)
Photos courtesy of the respective brands.
Mirror, mirror on the wall, who is the best-dressed of them all?