Model height: 175 cm Wearing AU 10

Model height: 175 cm Wearing AU 10

Twist-Knot Longline Bikini Top – Black

$52.00 AUD

Free shipping over A$100

30-day returns

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Colour: Black

Single item Standard price $52.00 Per item

MOST POPULAR Complete the set SAVE 10% MATCHED FOR YOU $111.00 $99.90 Set price

Choose your preferred colour and size for each item

Twist-Knot Longline Bikini Top – Black Black · AU 8 $46.80 $52.00

Colour Size

Black Low-Rise Bikini Bottom Black · AU 6 $53.10 $59.00

Colour Size

Fit Finder

Find your best fit

Enter your measurements below. This guide will only ask for the measurements that matter for this product.

Finding your size for Product Product details will appear here. Auto-detected product type

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Preferred fitChoose relaxed if you prefer more room or want to layer underneath.

Recommended size

Australian clothing size chart

Use your body measurements rather than the label of clothing from another brand. If your measurements fall across different sizes, choose the size that fits the most important area for that product.

AU size	Bust	Waist	Hips
AU 4	76–80 cm / 29.9–31.5 in	58–62 cm / 22.8–24.4 in	86–90 cm / 33.9–35.4 in
AU 6	81–85 cm / 31.9–33.5 in	63–67 cm / 24.8–26.4 in	91–95 cm / 35.8–37.4 in
AU 8	86–90 cm / 33.9–35.4 in	68–72 cm / 26.8–28.3 in	96–100 cm / 37.8–39.4 in
AU 10	91–95 cm / 35.8–37.4 in	73–77 cm / 28.7–30.3 in	101–105 cm / 39.8–41.3 in
AU 12	96–100 cm / 37.8–39.4 in	78–82 cm / 30.7–32.3 in	106–110 cm / 41.7–43.3 in
AU 14	101–105 cm / 39.8–41.3 in	83–87 cm / 32.7–34.3 in	111–115 cm / 43.7–45.3 in
AU 16	106–110 cm / 41.7–43.3 in	88–92 cm / 34.6–36.2 in	116–120 cm / 45.7–47.2 in
AU 18	111–115 cm / 43.7–45.3 in	93–97 cm / 36.6–38.2 in	121–125 cm / 47.6–49.2 in
AU 20	116–120 cm / 45.7–47.2 in	98–102 cm / 38.6–40.2 in	126–130 cm / 49.6–51.2 in
AU 22	121–125 cm / 47.6–49.2 in	103–107 cm / 40.6–42.1 in	131–135 cm / 51.6–53.1 in
AU 24	126–130 cm / 49.6–51.2 in	108–112 cm / 42.5–44.1 in	136–140 cm / 53.5–55.1 in

Between sizes? For tops, prioritise bust. For bottoms, prioritise hips and waist. For swimwear and dresses, use bust, waist and hips together. Choose the larger size for more coverage, layering or a less fitted feel.

Fit by product type

Tops, shirts & pullovers

Bust is the primary measurement. Height can help with coverage and length.

Jackets & zip layers

Use bust first, then waist. Size up if layering over another top.

Dresses & tunics

Use bust, waist and hips. Height helps with length expectations.

Pants & shorts

Use waist and hips. Inside leg helps with length, not usually the size.

Leggings

Use waist and hips. Choose larger for less compression.

Swimwear

Use bust, waist and hips. Height is useful for torso length and coverage.

Accessories and one-size products

Sun hats & visors

Measure head circumference. Adjustable hats may still be listed as One Size.

Arm sleeves

Measure the fullest part of the bicep. The sleeve should feel secure without restricting movement.

Sun gloves

Measure around the widest part of the palm, excluding the thumb.

Face and neck accessories

Usually One Size with stretch or adjustable fastening.

Umbrellas and gift cards

No body size is required.

One-size clothing

Check the product dimensions, shape and intended coverage before ordering.

How to measure

Bust

Measure around the fullest part of the bust while keeping the tape level.

Waist

Measure around the natural waist at the narrowest point.

Hips

Stand with feet together and measure around the fullest part of the hips.

Inside leg

Measure from the top of the inner leg down to the ankle or desired hem length.

Head

Measure around the head where the hat will naturally sit.

Bicep and palm

For sleeves, measure the upper arm. For gloves, measure around the widest part of the palm.

Need help?

Still unsure about your size?

Check the product-specific Size & Fit notes or contact our team before ordering.

Contact Us

Dispatched by Mon, Sep 07

Free delivery over A$100

Free shipping over A$100 30-day returns

Twist-Knot Longline Bikini Top – Black is a considered women’s style built around a clear silhouette, wearable detailing and easy outfit pairing. It is designed to work naturally within an Australian warm-weather, resort or everyday wardrobe depending on the style.

Why you’ll love it

Longline shape adds extra underbust coverage
Adjustable fit
Pairs easily with black or printed swim bottoms

Key features

Twist-knot front
Longline underband
Adjustable shoulder straps
Removable padded cups

Fabric & care

Material: nylon/spandex swim fabric. Rinse after wear. Hand wash cold where permitted by the sewn-in care label. Do not bleach. Dry in shade and avoid rough surfaces.

Size & fit

Supportive stretch fit with a wider longline band. Choose your usual AU size where possible and compare your measurements with the product-specific size guide before ordering.

Supportive stretch fit with a wider longline band. Available sizes: AU 8, AU 10, AU 12, AU 14, AU 16. Compare your measurements with the product-specific size guide before ordering.

• Twist-knot front
• Longline underband
• Adjustable shoulder straps
• Removable padded cups

• Longline shape adds extra underbust coverage
• Adjustable fit
• Pairs easily with black or printed swim bottoms

• Fabric:
nylon/spandex swim fabric

• Care:
Rinse after wear. Hand wash cold where permitted by the sewn-in care label. Do not bleach. Dry in shade and avoid rough surfaces.

Our Collections

Women's Clothing

Women's Sun Hats

Women's Swimwear

Accessories

Designed for sun filled days

From morning walks to beachside lunches, Aurelia Sun pieces are made to feel effortless, feminine and protective. Soft coverage, flattering silhouettes and breathable comfort make every style easy to wear again and again.

Style you love, protection you can trust.

Shop more styles

Questions before you order?

Everything you need to know about fit, fabric, delivery and returns.

Fit can vary by style. Use the size guide on the product page and compare your measurements before ordering, especially if you are between sizes.

Follow the care label inside the garment for the most accurate instructions. Gentle washing and avoiding harsh bleach will help keep your piece looking its best.

Material and care information is listed in the product description and Fabric & care section where available.

Coverage depends on the fabric, colour and fit. Lighter shades can be more transparent, so nude or seamless underwear can provide the smoothest finish.

Dispatch and available delivery options are shown on the product page and at checkout for your destination.

Eligible items can be returned within 30 days when they meet the conditions in our return policy. Please check the policy for exclusions and full instructions.

Many Aurelia Sun styles are selected with easy everyday wear and travel in mind. Check the product details for the fabric, fit and features of this specific piece.

Use the product images and colour selector as your guide. Screen settings can affect how colours appear, so small differences in tone are possible.