More online platforms are giving secondhand shopping a digital upgrade, rolling out features like livestream shopping and AI-powered search to make thrifting faster and more exciting. And while secondhand over new is often the more sustainable option, experts say it’s not a license to overconsume. Experts say buying more than you need still fuels waste, and shopping online can add emissions from servers and shipping, thrifted or not. Experts on fashion, sustainability and secondhand shopping say consumers can still find quality pieces that last while looking cool, too.