Support the arts. Buy the set from official retailers like ArtModelShop or the Liliana Studio direct store.
Furthermore, using pirated sets for commercial work opens you up to lawsuits. The studio employs Digimarc watermarking—invisible digital signatures embedded in the pixels. If you publish a composite using a stolen file, automated bots can scan the web and issue DMCA takedowns or fines of up to $25,000.
Let’s assume you have acquired the set. How do you push it beyond a simple reference library?