Free UK delivery
SIENNELLE
VAT included · Launch discount
Colour: White
Length: Long
Size: M
Only 6 left!
Delivery in 5-8 days from dispatch.
100% secure payment · Spanish family business 🇪🇸
30 days for exchanges and returns
🔥 In high demand. This dress is flying: only a few left in the selected option. Launch discount available while stock lasts.
🎁 2nd dress −80%
Add two Siennas —any you like, long or short, any colour— and the second costs £14.40 (−80% off its £72.00 RRP). Applied automatically at checkout.
Limited offer. Cannot be combined with the 3-for-2 promotion or any other discount.
Free UK delivery
30 days to return
100% secure payment
4.8/5 across 231 reviews
★★★★★
«I'm tall (5'10") and I always struggle to find a maxi dress that sits right: the Sienna falls perfectly on me, in my usual size. I finally know what to put on to feel good without thinking about it… and the compliments just keep coming 😅»
Cristina
You get up, throw it on, done. The Sienna does the work: soft drape, gathered neckline and a cut that looks good without asking anything of you.
Adjust it however you like: tighter for something elegant, looser for something more daring. The tie is yours.
Like wearing nothing at all: soft, relaxed, breathable fabric made for the hottest days. And no, it isn't see-through.
The fluid cut and open back create an effect that doesn't go unnoticed. Short walk, long impression.
At home, at the beach, travelling… one Sienna for the whole summer. Long (maxi) or short — you choose.
If you don't feel effortlessly beautiful, we'll refund you. "Now I get why everyone's talking about the Sienna."
Length
Long (maxi)
Flows softly to the ankle. Dinners, walks and evenings out.
Short
Above the knee, light and cool. Beach and everyday.
What's your size?
| Size | Bust (cm) | Short length (cm) | Long length (cm) |
|---|---|---|---|
| XS | 92 | 88 | 118 |
| S | 96 | 90 | 120 |
| M | 100 | 92 | 122 |
| L | 104 | 94 | 124 |
| XL | 110 | 96 | 126 |
| 2XL | 116 | 98 | 128 |
Medidas orientativas. Si dudas entre dos tallas, elige la mayor.
How to measure: bust = widest point; length = from shoulder to hem.
Reviews
231 reviews
Maribel G.
★★★★★ · 8 Jul 2026
«I bought it to wear around the house and ended up going out for dinner in it. With the tie at the back you show exactly as much as you want. My husband is in no doubt: best buy of the summer 😄»
Size L Recommends it
Rosa María P.
★★★★★ · 5 Jul 2026
«In this heatwave it's the only thing I want to wear. Not see-through at all — tested in full sun. I got the long Sienna in khaki and the black one is already in my basket.»
Size XL Recommends it
Encarna S.
★★★★★ · 29 Jun 2026
«I'm 49 and it's been a long time since a dress felt this comfortable. Loose in all the right places, and the back is so flattering without being over the top.»
Size XL Recommends it
Ana Isabel M.
★★★★☆ · 24 Jun 2026
«I love the way the fabric drapes and it doesn't cling at all in the heat. One star off because I'd have liked even more size options; otherwise, a brilliant buy.»
Size M
The dress
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