Serafina Silk Dress – Helsa

★★★★★4.8/5· thousands of reviews

The Serafina is our signature silk dress, crafted from 22-momme mulberry silk charmeuse for a luminous drape and second-skin feel. We designed this piece for women who want effortless sophistication — from morning meetings to evening gatherings.

The bias-cut midi silhouette skims the body without clinging, while adjustable spairing straps and a concealed side zipper ensure a customized fit. French seams throughout deliver a clean interior finish that feels as beautiful as it looks. Each dress arrives in our signature garment bag with care instructions and a complimentary silk hair tie.

  • 22-momme mulberry silk charmeuse
  • Bias-cut midi length (47 inches from shoulder)
  • Adjustable spairing straps with gold-tone hardware
  • Concealed side zipper with hook-and-eye closure
  • French seams for a refined interior finish
22-momme mulberry silk charmeuseBias-cut midi length (47 inches from shoulder)Adjustable spairing straps with gold-tone hardwareConcealed side zipper with hook-and-eye closureFrench seams for a refined interior finish
Build quality
Everyday use
Value
Durability
Style

The Silk We Use

The Silk We Use

Every Helsa Serafina silk dress is cut from 22-momme mulberry silk charmeuse sourced from family-owned mills in Hangzhou, China. Momme weight measures silk density — at 22-momme, our fabric offers exceptional durability while maintaining the fluid drape and natural sheen that makes silk irreplaceable.

We chose charmeuse weave specifically for the Serafina because the satin face catches light beautifully while the matte reverse keeps the lining secure against your skin. Our silk is OEKO-TEX Standard 100 certified, meaning it’s tested free of harmful chemicals at every production stage. The natural protein fibers regulate temperature, keeping you cool in summer and surprisingly warm on breezy spring evenings.


Fit & Sizing Guide

Fit & Sizing Guide

The Serafina runs true to size with a relaxed, bias-cut fit through the bodice and hips. We recommend ordering your usual dress size — the adjustable straps allow up to two inches of vertical customization, while the bias construction naturally accommodates your shape.

Size Chart

XS fits bust 32-34 inches, waist 25-27 inches, hips 35-37 inches. S fits bust 34-36 inches, waist 27-29 inches, hips 37-39 inches. M fits bust 36-38 inches, waist 29-31 inches, hips 39-41 inches. L fits bust 38-41 inches, waist 31-34 inches, hips 41-44 inches. XL fits bust 41-44 inches, waist 34-37 inches, hips 44-47 inches.


Care Instructions

Care Instructions

We designed the Helsa Serafina silk dress to become more beautiful with proper care. Professional dry cleaning is the safest option, but gentle hand washing preserves the fabric just as well when done correctly.

For hand washing, use cool water with a pH-neutral silk detergent — never regular laundry soap, which damages the protein fibers. Submerge the dress for three minutes, then rinse thoroughly without twisting or wringing. Roll gently in a clean towel to remove excess water, then hang to dry away from direct sunlight. Iron inside-out on the silk setting while still slightly damp, or use a steamer for touch-ups.


More silk essentials from Helsa

Margot Silk Slip Dress
Margot Silk Slip Dress
Our minimalist slip silhouette in the same luxurious 22-momme silk charmeuse
Explore Margot →
Eloise Wrap Dress
Eloise Wrap Dress
A versatile wrap style with adjustable tie closure in silk crepe de chine
Discover Eloise →
Camille Midi Skirt
Camille Midi Skirt
Bias-cut silk skirt with an elastic waistband for effortless styling
See Camille →
Isabelle Silk Camisole
Isabelle Silk Camisole
Layer under blazers or wear solo — adjustable straps and French seams throughout
View Isabelle →
Odette Sleep Set
Odette Sleep Set
Short-sleeve top and wide-leg pants in breathable silk for year-round comfort
Explore Sleep →
Vivienne Scarf
Vivienne Scarf
Hand-rolled silk twill scarf with exclusive Helsa prints
See Prints →

What people are saying

4.8
★★★★★
Based on verified reviews
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C
Caroline T.
Verified buyer
★★★★★
Worth every penny for the quality
I’ve purchased silk dresses from other brands, but the Serafina is in a different league. The weight of the fabric feels substantial without being heavy, and the bias cut is incredibly flattering. I’ve worn it to three weddings this summer and received compliments every time.
N
Nina R.
Verified buyer
★★★★★
Finally, a dress I can hand wash
I was nervous about the price, but the care instructions actually work. I hand wash mine every few wears and it still looks new after six months. The adjustable straps are genius because I can wear it with different bras depending on the occasion.
J
Julia K.
Verified buyer
★★★★★
True luxury that lasts
The French seams and hidden zipper show the level of craftsmanship you just don’t see anymore. I bought the ivory first, then came back for the midnight navy. These are investment pieces I’ll wear for years.
M
Mara L.
Verified buyer
★★★★☆
Beautiful fit, runs slightly long
I’m 5’4″ and the midi length hits right at my ankles, so I had it hemmed an inch. Other than that, the fit is perfect — not too tight through the hips and the straps adjust easily. The silk is even more beautiful in person than in photos.
S
Sophie M.
Verified buyer
★★★★★
My go-to dress for everything
I wear this to the office with a blazer, then straight to dinner by swapping shoes and adding jewelry. The fabric doesn’t wrinkle even after sitting all day. I love that it comes in a garment bag for travel.
E
Elena P.
Verified buyer
★★★★★
The drape is unmatched
I own a lot of silk, and the 22-momme weight makes such a difference. The dress skims without clinging, and the charmeuse weave catches candlelight in the most flattering way. I feel elegant and comfortable at the same time, which is rare.

Questions about the Serafina silk dress

Order your usual dress size — the Serafina runs true to size with a relaxed fit through the bodice and hips. The adjustable straps provide up to two inches of vertical customization, so you have flexibility even if you’re between sizes.

If your measurements fall between two sizes, we recommend sizing up for a more relaxed drape or sizing down for a closer fit through the waist. Our customer service team is available via chat to help you decide based on your specific measurements and fit preferences.

We recommend hand washing or dry cleaning to preserve the silk’s luster and shape. Machine washing can damage the delicate fibers and cause the bias cut to stretch unevenly.

For hand washing, use cool water with a pH-neutral silk detergent. Submerge the dress for three minutes, rinse without twisting, and roll gently in a towel to remove water. Hang to dry away from sunlight. Most customers find hand washing takes less than ten minutes and keeps their dress looking new for years.

Momme measures silk thread density — higher momme means more durable, longer-lasting fabric. At 22-momme, the Serafina’s silk resists snags and maintains its shape better than 16- or 19-momme alternatives you’ll find elsewhere.

You’ll notice the difference immediately: 22-momme silk has a substantial hand-feel without being stiff, and it drapes beautifully without going limp. The fabric also holds color better over time and withstands repeated washing without thinning.

Yes, the Serafina features a full lining in matching silk twill that extends from the bust to the hem. The lining provides coverage without adding bulk, and because it’s silk rather than synthetic, it breathes naturally and moves with the shell fabric.

The lining is cut on the straight grain while the shell is bias-cut, which prevents the dress from twisting or riding up as you move. This construction detail is one reason the Serafina maintains its elegant drape all day.

The dress measures 47 inches from shoulder to hem, which falls approximately mid-calf on someone 5’6″ tall. On shorter frames it hits closer to the ankle, while taller customers find it lands just below the knee.

We offer complimentary hemming for petite customers — just include your preferred inseam measurement in the order notes. Our tailors can shorten the dress while preserving the bias-cut drape and original hem finish.

We currently offer five colors: ivory, blush, sage, midnight navy, and black. Each shade is carefully selected to complement a range of skin tones and work across seasons.

Colors rotate based on availability and seasonal demand. If you have your heart set on a specific shade, we recommend joining our waitlist — we restock popular colors every eight to ten weeks and notify subscribers first.

The adjustable straps are designed to work with most bra styles. For the cleanest look, we recommend a strapless bra or adhesive cups, but customers regularly wear convertible or multiway bras by crossing the straps.

The bias cut and lining provide enough coverage that many customers skip a bra entirely. The silk twill lining is opaque enough to wear with confidence, and the relaxed fit through the bodice doesn’t require structured support.

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