. . . "Stella and I keep our [collaborations] to a minimum.'McCartney, who referred to the designs as 'timeless' and 'staple pieces,' has previously collaborated with brands including adidas, H&M and Gap Kids, and Paltrow has sold exclusive ranges from brands MiH Jeans, Melissa Odabash and Chinti & Parker on Goop in the past.'When one of your best friends is a very successful artist and you love and admi" .