Frequently Asked Questions

Everything you need to know about your SIENNA shopping experience.

How long does shipping take?

Standard shipping typically takes 3-5 business days within the continental US. International orders may take 7-14 business days depending on the destination and customs processing.

What is your return policy?

We offer a 30-day return policy for all unworn items with original tags attached. Simply visit our Returns Portal to start your process and receive a prepaid shipping label.

How do I know which size to choose?

Each product page features a detailed size guide with specific measurements. If you are between sizes, we generally recommend sizing up for a more comfortable fit.

What payment methods do you accept?

We accept all major credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, and interest-free installment plans through Klarna and Afterpay.

Can I change or cancel my order after it has been placed?

To ensure fast delivery, we process orders quickly. You can change or cancel your order within 60 minutes of placement by contacting our customer support team.

Are your materials sustainably sourced?

At SIENNA, we are committed to ethical fashion. Over 70% of our current collection is made from organic cotton, recycled polyester, or Tencel to minimize our environmental footprint.