SIR. Alva Bikini Brief

Name: SIR. Alva Bikini Brief
Brand: SIR.
SKU: SIR226-0002 B
Price: 140.00 USD
Availability: InStock

SIR.

$140.00

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Product Insights & Style Tips

The SIR. Alva Bikini Brief channels sun-drenched nostalgia with a modern, street-smart edge. In a lightweight lycra that moves with you, it feels breathable and easy, the kind of fabric that dries quickly and hugs without cling. The exclusive Laila Stripe adds a punch of graphic cool—nods to the brand’s ‘70s codes and a print-forward instinct that reads playful yet polished by the pool.

Low-rise sits comfortably on the hips while a high-cut leg elongates the silhouette, giving the piece a sleek, leg-lengthening line. The self-tie sides adjust for a personalised fit and variable coverage, so you can dial in as much skin as you want—from cheeky to modest. Lightweight lycra means quick-drying wear that layers neatly under a sheer cover-up or the Alva Halter String Top for a cohesive beach-to-bar moment.

SIR.'s ethos—Separates; Intimates; and Ready-to-Wear—meets a sun-kissed, ’70s-inspired mood with the Alva Brief. It slots into a coordinated swim edit when paired with the Alva Halter String Top, underscoring the brand’s appetite for print-led, mix-and-match dressing that travels from beach to boardwalk without skipping a beat.

Materials / Fabrication

Lightweight lycra with generous stretch
Exclusive Laila Stripe print (SIR-designed)
Low-rise silhouette
High-cut leg
Adjustable self-tie sides for a personalised fit and variable coverage

Recommended Care

Rinse after saltwater or chlorine exposure; hand wash cold with mild detergent
Do not wring or twist; lay flat to dry or hang to dry away from direct sunlight
Avoid ironing or high heat; do not dry clean; avoid fabric softeners

Lookbooks

SIR the Label Shapes a New Summer Attitude Through Tropicana

Tropicana Summer from SIR the Label feels like a warm breath rushing in from somewhere tropical and slow paced. The campaign sits in that sweet space where ease meets intention. Jennifer Stenglein photographs Anna and Latahlia in a way that turns every scene into a soft daydream. You see slip dresses drifting around the body and swim sets that hold a simple confidence that SIR has shaped since its early days. The mood lands somewhere between a sun drenched afternoon and the kind of evening that never seems to end.

About SIR

SIR The Label is an Australian fashion label with a sustainable background. The cult Australian fashion label was founded by Sophie Coote and Nikkie Campell in 2014, delivering socially conscious minimalism with a free-spirited edge since its inception. Think 70’s, 80’s inspired silhouettes with a beachy aesthetic that can be worn whether you’re beach side or hitting the town. Shop the latest collection from SIR The Label, ranging in dresses, shirts, skirts, pants and swimwear.