And they're expensive!
Vivienne said of the charity:
"The greatest thing about Cool Earth is that its activities are focused on the main problem, deforestation. The money they spend has maximum effect, working alongside indigenous people, putting mechanisms in place to save the planet."
Sounds like a great cause.
20 designs are currently available on her website, each costing over $1,400. Westwood hopes to raise $100,000 for Cool Earth.
CLICK HERE to check out the rest of the designs!