Stella, who created the campaign with her sister and father Paul McCartney, explains:
"MFM is about us all taking control of the environment we live in for our kids and the generations to come. Whether you eat meat of not, you can be part of this decision to limit the meat industry destroying our planet's resources."
The two shirts: a superhero for boys and an Intarsia leopard for girls, are made out of organic cotton and hopes to help educated kids and adults about the climate change and meat consumption.
Both tees will be available at certain London stores along with her new collection for the kiddies at Gap.
[Image courtesy of Gap.]