My teenage daughter, whose fashion sense runs to the eclectic, gets basically all of her clothing second-hand online. She also wears a number of my old Hawaiian

My teenage daughter, whose fashion sense runs to the eclectic, gets basically all of her clothing second-hand online. She also wears a number of my old Hawaiian shirts that are still going strong after nearly 40 years of (admittedly occasional) use. So it is possible to source responsibly, but it helps if you don't set too much store by the judgements of the hoi polloi.