home - SienbyNien

Handpicked with love, by Elselien & Nina

Time to turn heads

Shop now

Give your designerbag a second live

Let us sell your bag

Sell now

Authenticity is everything

Your designer bag, our experts

Get your bag authenticated

Authenticity guaranteed

At Sienbynien, we believe fashion should feel as good as it looks and that starts with authenticity. Every vintage designer bag is handpicked and carefully inspected by our experts to ensure 100% authenticity.

Learn More

Sustainable luxury

All our vintage designer bags, dustbags, and packaging materials are proudly sourced and crafted in Europe, ensuring the highest quality, ethical craftsmanship, and sustainable luxury.

Learn More

Authenticated & handpicked with care

New arrivals

Be the First to Discover Our New Arrivals

Join the Sienbynien family and get exclusive early access to our latest collections, before they go live. Be the first to know about exciting new launches, special releases, and more!