The Agathe Cotton A-Line Midi Dress
XS / Oat Milk
$139.00
Sale price
$139.00
Regular price
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Dress
The Agathe Cotton A‑Line Midi Dress
Graceful movement, effortless charm
$139.00
Sale price
$139.00
Regular price
Your size, in numbers
SizeBustWaistHipHollow to Hem
XS32–3324–2534–3656
S33–3525–2736–3857
M35–3727–2938–4058
L38–4030–3241–4359
XL40–4232–3544–4560
2XL42–4435–3745–4761
3XL44–4638–4047–5062
4XL47–5041–4551–5563
SizeBustWaistHipHollow to Hem
XS81.5–8461–63.586.5–91.5142
S84–8963.5–68.591.5–96.5145
M89–9468.5–73.596.5–101.5147.5
L96.5–101.576–81.5104–109150
XL101.5–106.581.5–89112–114.5152.5
2XL106.5–11289–94114.5–119.5155
3XL112–11796.5–101.5119.5–127157.5
4XL119.5–127104–114.5129.5–139.5160
Your fit: XS — same on both halves
Not the same size on top and bottom? Most women aren’t.
Fits your bust
Fits your waist and hips
Choose a size for each half, or return to one size.
Fit tip
Model is 5'7" and wears S / S. Between sizes? We recommend sizing up on the bottom.
Cut to your exact measurements after you order. It arrives already yours.
Bust (in)
Waist (in)
Hips (in)
Hollow to Hem (in) · optional
Height (in) · optional
Extra Length (in) · optional
These three numbers become your dress. Measure over light clothing with a soft tape. Our guide takes two minutes.
Made to order in 7–14 days · We make it fit
Description
The Agathe offers a graceful back detail, with a low line and a generous bow. A flowing silhouette that moves with ease through any occasion.
Sewn in crisp, lightweight cotton in a soft ivory shade, The Agathe holds its shape with a subtle drape. This breathable fabric offers comfort and a natural feel.
Fit notes: The Agathe is fitted through the bodice and waist, then releases into a full, flowing A-line skirt. The wide straps offer comfortable support, while the low back design is cut to stay in place. Between sizes? Consider your bust measurement for the most comfortable fit. Find your measurements in the Size Guide.
Details: Midi length, hits mid-calf · Straight neckline · Sleeveless · Low back · Back tie closure · Waist bow · Machine wash cold, line dry · Pictured in Oat Milk
The Bielline Difference
One dress, two sizes. The bodice is cut to your top size, the skirt to your bottom, made to your measurements after you order. How it works
Fabric & Care
100% cotton, garment-washed. Machine wash cold with like colors, line dry, warm iron.
Shipping & Delivery
Your dress is cut and sewn after you order: 7–14 days in production, then tracked shipping to the US and UK. 14–28 days door to door.
Returns & Exchanges
We make it fit. If the cut is our error, we remake it or refund you in full. If your measurements were off, we send a $30 tailor credit toward a local adjustment, so the dress still ends up fitting you.
The Bielline Difference
One dress. Two sizes. Yours alone.
Choose your top size
The one that fits your shoulders and bust. Nothing pulls, nothing gapes.
Choose your bottom size
The one that fits your waist and hips. The drape falls exactly where it should.
Made for you, to your sizes
Cut and sewn to your combination, finished by hand, so the first wear feels like the tenth.
From the atelier
Deliberately designed. Effortlessly you.
Ten pieces a season, each cut after you order it and finished by hand with French seams. Made to be reached for, not saved for.
Morning meetings to dinner outside: one dress, no costume change.
“It moves with me, and it fits exactly where it should.”
Read our story L
Happy with this. The straight neckline lays smooth on me.
E
A quiet daytime dress, still fine when dinner comes.
E
I got this dress for my senior photoshoot and they were so kind about prioritizing getting my order on time to me. The dress is also more stunning in person and is so soft and fits perfectly!
I
amazing customer service the quality of the dress was great, I will definitely be ordering from them again
É
Cotton, and a good think about it before that order was placed, no rushing.
J
Incredible costumer support, beautiful dress and amazing color. I will order more items for sure. This will be my to go to shop for linen products:)
C
The cotton has body to it so nothing clings to me. Oat milk is an easy neutral and I have worn it constantly.