The style icon that popularized the muddy Wellington as a festival must-have, rock-ready fringing, leopard as a neutral and the importance of the skinny jean has teamed up with American footwear brand Stuart Weitzman to celebrate her favourite style - the 5050 boot.

First introduced in 1993, the 5050 boot was the signature design so named because of it's use of stretch in the boot construction, revolutionizing the clunky, stiff boots of years prior.

Stuart Weitzman 5050 boot

This year marks the 5050's 25th anniversary and alongside starring in the campaign for the RESERVE boot (this season's iteration), Mossy explains in a short film for the brand, "My favourite thing about the Reserve boot is the stretch back. It's just comfortable. It's another boot that gets better with age."

Well, Kate, that'd make at least two things in this campaign that get better with age.

Kate Moss spills on her favourite pair of Stuart Weitzman boots