Client Care

Contact Celestium

Our client advisors are here for anything you need — sizing, alterations, order tracking, or a considered second opinion before you buy. Most messages are answered within one business day.
Client Care
Mon – Sat, 9:00–18:00
Lisbon time, for sizing, alterations, and order support.
Email
hello@celestium.com
Written enquiries answered within one business day.
Phone
+351 21 000 0000
Best reached before 15:00 Lisbon time for same-day help.
Atelier
Lisbon, by appointment
Private fittings and consultations, Tuesday – Saturday.
Live Chat
Available during boutique hours
Look for the chat icon in the lower right corner.
Press & Wholesale
press@celestium.com
For media features and partnership enquiries.

Write to us

Share as much detail as you can. If your message concerns an existing order, add the order number so we can respond in full the first time.
Response — within 24 hours
Languages — EN · PT · FR
We never share your details.

Before you write

How long does delivery take?

Orders within Portugal typically arrive in 2–4 business days. International orders can take 5–10 business days depending on destination and customs processing.

What is your returns policy?

Unworn items with tags attached may be returned within 30 days of delivery for a full refund. Alterations and final-sale pieces are excluded.

How do I find my size?

Each product page includes a full measurement guide. If you're between sizes, we recommend sizing up for outerwear and true to size for knitwear.

Can I change or cancel an order?

We begin preparing orders quickly, so changes can only be made within one hour of purchase. Contact us immediately using the form above.

Do you offer alterations?

Complimentary basic alterations are available on select outerwear purchased in the last 30 days. Book an appointment at our Lisbon atelier.

How can press or retail partners get in touch?

Select "Press / media" or "Wholesale / partnerships" as the subject above and our partnerships team will respond within three business days.

The Celestium Standard
"Exceptional service is part of the Celestium experience."
— Private appointments at our atelier are available by request, in person or by video.
Book an Appointment
Editorial — atelier, client appointment

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