If you purchase an independently reviewed product or service through a link on our website, The Hollywood Reporter may receive an affiliate commission. For the sustainability-minded, deal-savvy designer enthusiast, there’s no smarter way to shop than to shop second-hand. And while Rue La La is best known for its online flash-sale concept, more recently, the retail site has expanded into authenticated pre-owned luxury goods . Thanks to its expertly curated selection and exclusive price drops, the platform has quickly become one of the top spots to shop for second-hand designer pieces online. While Rue La La follows a members-only model, membership is entirely free via online sign up . Once logged in, the retailer’s pre-loved marketplace is divided into 10 categories or edits.…