Sienna - Long Sleeve Button-Down Dress
Size assistant · Women
Your size in a few seconds
Answer 4 quick questions — we'll recommend the size for this exact piece.
1 · Height & weight
2 · Your build
3 · Bust compared to average
4 · How do you like it to fit?
Our recommendation
| Size | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| US | 0–2 | 4–6 | 8–10 | 12–14 | 16 | 18 |
| Bust (in) | 31–32 | 33–34 | 35–36 | 37–39 | 40–42 | 43–45 |
| Waist (in) | 24–25 | 26–27 | 28–29 | 30–32 | 33–35 | 36–38 |
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Tired of outfits that feel like too much work?
Imagine slipping into one flowing dress and instantly having a polished look without spending time matching separate pieces.
One dress, an easy outfit
The button-down front and full-length silhouette give you a complete look in one piece, so you can get ready quickly without overthinking what to wear. Just add your favourite shoes and accessories and you’re ready for the day.
Loose fit, easy comfort
The relaxed cut gives you plenty of room to move while creating a naturally flowing shape. It’s an easy choice for days when you want to feel comfortable without wearing something overly fitted.
Classic collar & button details
The turn-down collar and button-down front add a timeless shirt-dress feel, giving the simple silhouette a more polished finish. Wear it buttoned up for a clean look or style it with your favourite accessories for a more personal touch.
Long sleeves for cooler days
The long sleeves provide extra coverage when autumn temperatures start to drop. Pair Sienna with boots, flats or a light layer for an outfit that transitions easily through the season.
Flowing maxi length
The long, flowing silhouette creates an elegant look that moves naturally as you walk. It works just as well for relaxed everyday plans as it does for a more dressed-up occasion.
Sienna gives you that effortless feeling of having your outfit figured out in seconds. With its flowing maxi length, relaxed fit and classic button-down details, it’s an easy piece to reach for throughout the autumn season.
Most of our pieces fit true to size. Use the size assistant above for a personal recommendation in seconds — it considers your height, weight, build and preferred fit for this exact style.
Between two sizes? For a relaxed look choose the larger size; for a closer fit the smaller one. Still unsure? Email info@aldervalestudio.com and our team will help personally.
The exact composition of this piece is listed in the product description above. To keep natural fibers beautiful:
- Wash wool, cashmere and knitwear by hand or on a gentle cycle at 30°C / 86°F, lay flat to dry.
- Refresh coats and suede by airing them out; use a soft brush for suede.
- Store knitwear folded, never on a hanger, to keep its shape.
Free shipping across the US. Orders are processed within 2–4 business days and delivered within 3–4 business days. You'll receive a tracking link by email as soon as your order ships.
90-day returns. If something isn't right, contact us within 90 days and we'll email you a return label to print. Return shipping is at the customer's cost unless the item is faulty or we made a mistake — then it's on us. Refunds are issued to your original card within 5–10 business days after we receive your return.
The ALDER VALE promise
- Try it at home — not right? Return within 90 days.
- Wrong size? We help you find the right one before you order.
- Every order tracked from our studio to your door.
- Clear prices — no hidden fees, no subscriptions.
