Stella is a very important high fashion designer and following in her late mother, Linda McCartney and her father Paul's footsteps, Stella uses no fur or leather in her clothing line.
A line from a review of her fall 2004 collection:
".. there were some good accessories, always a challenge for someone dedicated to never using fur or leather. The standout: a canvas sneaker resting on a high rubber heel. "
You can see her collection at:
http://www.style.com/fashionshows/collections/F2004RTW/complete/thumb/SMCCARTN

Kimberly Brower,
Vancouver