Second Hand isn't only an environmentally friendly thing nowadays, but it's also becoming quite popular among younger people who both care about nature and finding something unique to stand out among others. I have been a big fan of vintage and thrift shops since 2016. I bought a few things online and through apps like Poshmark. But since we moved to Europe, I have been able to enjoy not only second-hand stores but also visiting vintage markets where you can find a lot of rare items from the 60s,70s, 80s - oftentimes for a great price.
Last year, I purchased Chanel earrings in a Parisian vintage market and a Chanel scarf online. I have skirts and a few vintage bags that I got while traveling in Europe. If you are still not convinced that second-hand clothes can be good, will save you money and also save our environment, I suggest you reconsider!
I like to shop via Etsy (sometimes you can find a good deal), Vestiaire Collective (you might pay for tax, authenticity and shipping fees), Poshmark ( I used to shop via Posh a lot but since we don't live in the US, I don't use it). You can check Rebelle online store too, I don't have any experience with them but would love to hear from you. Also, I have seen that many use the Vinted app. If you know something more about second-hand shopping please leave in the comment below.