Black Heart Lingerie Silk Longline Bra in Black with strappy high-waist panty and leg garters, front view
Black Heart Lingerie Silk Longline Bra in Black with strappy thong, front view
Black Heart Lingerie Silk Longline Bra in Black shown with Classic and Caged two-way styling
Close-up of the Black Heart Lingerie Silk Longline Bra in Black with caged straps and gold hardware
Black Heart Lingerie Silk Longline Bra in Black with leg garters, back side view
Black Heart Lingerie Silk Longline Bra in Black, side view
Back view of the Black Heart Lingerie Silk Longline Bra in Black showing adjustable straps and gold hardware
Black Heart Lingerie Silk Longline Bra in Black with strappy high-waist panty and leg garters, front view
Black Heart Lingerie Silk Longline Bra in Black with strappy thong, front view
Black Heart Lingerie Silk Longline Bra in Black shown with Classic and Caged two-way styling
Close-up of the Black Heart Lingerie Silk Longline Bra in Black with caged straps and gold hardware
Black Heart Lingerie Silk Longline Bra in Black with leg garters, back side view
Black Heart Lingerie Silk Longline Bra in Black, side view
Back view of the Black Heart Lingerie Silk Longline Bra in Black showing adjustable straps and gold hardware
ECLIPSE

Silk Longline Bra

5.05 Reviews
The Convertible Longline
Regular price $158

95% Silk · Fully Silk-Lined
Lightly Padded Cups
Convertible · Two Ways to Wear
Signature Gold-Plated Hardware

Size:
Find Your Fit

The Black Heart Fit Guide

How to measure

Use a soft tape measure and measure directly against the body.

Bras (Longline and Push-Up): Measure snugly around your ribcage, directly beneath your bust, for your band size. Then measure around the fullest part of your bust. The difference between the two measurements determines your cup size. A 2-inch difference corresponds to a B cup, 3 inches to a C cup, 4 inches to a D cup, and 5 inches to a DD cup.


Between sizes

Silk is designed to contour comfortably to the body. If your measurements fall between sizes, we generally recommend choosing the larger size.


Bras · Longline

Our Silk Longline Bra combines extended support with a contoured silhouette and slightly more flexibility through the band than our Push-Up Bra.

From Brennah, on fit.

“My underbust is 28 inches, my bust is 33 inches, and I wear a 32DD in our Silk Longline Bra. I designed this bra with extended support and a contoured silhouette, creating a fit that feels supportive, flattering, and comfortable throughout the size range.”

Band

UnderbustBHL Band
27-29"32
30-31"34
32-33"36

Cup

DifferenceCup
2"B
3"C
4"D
5"DD

Supportive, sculpted fit with light flexibility through the band. For a firmer fit, choose your recommended size. For a relaxed fit, size up in the band. Crafted from silk with a touch of stretch for comfort and ease of movement.

Color:
Free U.S. exchanges within 15 days Discreet delivery Free U.S. shipping over $150

Free exchanges within 15 days

Discreet delivery

Complete the Eclipse Collection

Receive 10% off when you complete the set
Strappy silk thong - Black Heart Lingerie Strappy silk thong - Black Heart Lingerie
Strappy Silk Thong
Regular price $98
Black Heart Lingerie Silk Garter Belt in Black with leg garters, side view Black Heart Lingerie Silk Garter Belt in Black styled with a bralette, front view
Silk Garter Belt
Regular price $128
Black Heart Lingerie Back-Seamed Stockings in Black styled with a garter belt, front view Back view of the Black Heart Lingerie Back-Seamed Stockings in Black showing the seam up each leg
Back-Seamed Stockings
Regular price $28
Total Price:
$371$412
You save $41

Silk lingerie designed to be worn your way.

The Eclipse Convertible Longline Bra pairs a low-cut balconette silhouette with two ways to wear. Made from silk with stretch and fully silk-lined, lightly padded cups lift and shape without adding volume. Finished with signature gold-plated hardware.

95% Silk · 5% Elastane · Fully Silk-Lined

Runs true to size. If you’re between bands, size up. For additional guidance, see our size guide.

Hand wash cold and lay flat to dry to preserve the silk and signature gold-plated hardware.

Free standard shipping on U.S. orders over $150.

See our shipping information, including international shipping.

See our returns policy.

Find Your Fit


The Silk Longline runs true to size across 32B through 36DD. The longline band sits low on the ribcage and smooths under the bust. Lightly padded cups lift and shape without adding volume.

See the full size guide
Silk Longline Bra on the model

Why Silk?


The first layer matters.

Naturally breathable and smooth against the skin, our lingerie is fully silk-lined to place silk where it belongs: closest to the body.

Look closer

Loved by Lovies

Notes from the women who wear Black Heart.

The silk is noticeably different from other pieces I own. It’s smooth and cool on the skin and doesn’t feel flimsy. I was comfortable wearing this for hours without needing to adjust anything.

Y.Black Heart customer

Bought this for my partner and it looks incredible on her. The silk feels high-end, the fit is flattering, and the convertible straps make it versatile without being complicated.

JohnBlack Heart customer

Love the easy breezy ordering and the luxurious box and wrapping. I feel like I’m getting spoiled. The best customer service too!

JillieBlack Heart customer
Read all reviews

Indulge in Darkness, Embrace Your Light.

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