Sustainable fashion is in high demand at the moment. As brands fight to future-proof their operations, Ella and Kara are two women who believe musicians might be able to help accelerate the change. As the co-founders of PETRA, an agency partnering up sustainable brands with artists and DJs, they believe in the appetite for this way of growing brands. Early on in their founder journey, we wanted to catch up with them to unpack what it takes to launch your company and the decisions behind how you do that, and when.