Authenticity guaranteed: Fashion should feel as good as it looks, and that starts with authenticity. We handpick and inspect every item with years of expertise and passion for timeless fashion. 100% authenticity is our foundation.
To give you complete confidence in your purchase, every item goes through our rigorous 3-step verification:
Our collection of authentic vintage designer bags comes exclusively from reliable suppliers and consignment stores we’ve been working with for years. We also receive beautiful pieces from customers who want to give their designer bags a second life.
Once the items arrive at our office, they undergo a thorough examination by both an in-house expert and an independent third party. We inspect every detail, from stitching and hardware, to logos, fonts, materials, and even the scent.
Only when we are 100% certain of the item’s authenticity and condition do we add it to our collection of authentic pre-loved designer bags. This way, you can shop with peace of mind and enjoy timeless pieces that are truly authentic.
Thanks to this careful process, we guarantee that every SienbyNien piece you buy is authentic and true to its story. We understand that buying pre-loved luxury online can feel like a leap of faith. That’s why your trust in SienbyNien means everything to us. We’re here to make your experience joyful, transparent, and worry-free, because fashion should feel as good as it looks.
If you have any questions about the authenticity of our items or want to learn more about our process, don’t hesitate to reach out at support@sienbynien.com. We love sharing our knowledge and helping you feel confident in purchasing your timeless treasures.
Not sure if your designer bag is authentic? We’re here to help. With years of experience in vintage and a sharp eye for detail, we carefully check your bag for authenticity.