🇨🇦 🇺🇸 Canada & USA only
This bikini is available for delivery to Canadian and United States addresses only. Ships from USA to Canada/USA. Free shipping exclusions apply. Shipping will be added at checkout.
BY After Dark — Signature Black String Bikini Set pairs a classic black triangle bikini with signature gold-tone BY artwork for a confident beach-club look. The monogram on the top and understated Always in Season lettering on the matching bottoms give this two-piece swimsuit a distinctive finish, while adjustable string ties keep the silhouette simple and personal.
Made for beach escapes, poolside afternoons and your next resort stay, this black bikini set looks effortless with an open beach shirt, a sheer cover-up or a flowing wrap skirt. The triangle top features removable padding, and the tie-side bottoms let you adjust the fastening at each hip. It is a signature swim look with just enough gold-tone detail to stand out.
💬 The After Dark Statement
Classic black with signature gold-tone BY artwork
Triangle bikini top with adjustable neck and back ties
Matching bottoms with adjustable side ties
Subtle Always in Season lettering across the front
A confident two-piece look for beach days and resort escapes
✨ Stylish yet practical
- Two-piece set includes a triangle bikini top and matching bottoms
- Adjustable string fastenings at the neck, back and hips
- Removable padding in the bikini top
- Soft, stretchy fabric with double-layered construction
- UPF 50+ fabric
- Black colourway with printed gold-tone artwork
- Available in sizes XS, S, M, L and XL
- Made to order
💖 Why You'll Love It
- The BY monogram gives a simple black bikini its own identity
- Matching top and bottoms create a coordinated swim look
- Tie fastenings allow you to adjust how the set sits
- Removable padding gives you a choice in how you wear the top
- The black-and-gold-tone design pairs easily with neutral or colourful cover-ups
- A versatile choice for poolside styling, beach holidays and resort wardrobes
✨ Complete the Look
Layer this bikini with an open beach shirt or a sheer style from our Beach Cover Ups collection. Explore Resort Vacation Looks for your next getaway, or discover more pieces in New Arrivals.
🧵 Fabric & Fit
- US fulfilment: 78% polyester, 22% elastane; 290 g/m²
- EU fulfilment: 88% recycled polyester, 12% elastane; 230 g/m²
- Fabric composition and weight depend on the fulfilment location
- Stretch: Soft and stretchy
- Construction: Double layered
- Top: Triangle cups, removable padding and adjustable ties
- Bottoms: Matching tie-side style
- Available sizes: XS, S, M, L, XL
Print detail: The BY monogram and lettering are printed in a gold-tone colour; they are not metallic foil, embroidery or metal hardware.
Shipping & Delivery — BY Signature Collection
Our exclusive BY Signature Collection is specially produced for each order.
Shipping is calculated at checkout based on your delivery location. These exclusive designs ship separately and are not eligible for our standard free-shipping promotion.
Orders containing additional Bikini Yes items may arrive in separate packages.
🧼 Care Instructions
Rinse thoroughly after swimming to remove chlorine and salt residue. Follow the garment care label for washing and drying.
📏 Find Your Fit
Body measurements in inches. Start here to choose your size. Measure around the fullest part of your bust/chest and hips, keeping the tape level. If your measurements fall between sizes, choose the larger size. Adjust the neck, back and side ties for a comfortable fit.
A — Bust / Chest: Measure around the fullest part of your bust and across your back, keeping the tape level.
B — Hips: Measure around the fullest part of your hips and bottom, keeping the tape parallel to the floor.
| Size |
Bust / Chest |
Hips |
| XS |
33⅛ |
35⅜ |
| S |
34⅝ |
37 |
| M |
36¼ |
38⅝ |
| L |
39⅜ |
41¾ |
| XL |
42½ |
44⅞ |
Detailed Bikini Measurements
Actual bikini measurements in inches. These dimensions are taken with the bikini laid flat, without stretching; they are not body circumferences. Use them to compare with a bikini you already own. Each set is made by hand, so measurements may vary by up to 1 inch.
| Size |
A |
B |
C |
D |
| XS |
6¾ |
7½ |
10⅜ |
9⅝ |
| S |
7⅛ |
7⅞ |
11¼ |
9¾ |
| M |
7¼ |
8¼ |
12 |
10 |
| L |
7⅞ |
9⅛ |
13⅝ |
10⅜ |
| XL |
8½ |
9¾ |
15¼ |
11¼ |
-
A — Cup length: From the top to the bottom of one triangle cup.
-
B — Cup width: Along the curved bottom edge of one cup, laid flat.
-
C — Back width: Across the back panel of the bikini bottoms, excluding the side ties.
-
D — Bottom height: From the upper edge of the bottoms to the lowest point at the crotch.
The back panel of the bikini bottoms is 1–1.2 inches wider than the front panel.
Care & Details: Each set is made to order. The double-layered construction can leave a visible stitch at the crotch seam; this is a normal manufacturing detail.
Colours may vary slightly due to lighting and screen settings. Fit and appearance may differ depending on body shape. Measurements may vary slightly. Please refer to the description and size guide.
