A one-piece is often more versatile than a bikini. It stays put during activities, it works as a going-out top under a skirt, and it photographs more confidently in water. Here is the shortlist of what we recommend in 2026.

What to look for in a one-piece

1. Fabric that holds its shape. Thin single-layer fabric looks cheap and sags by the third wear.
2. Neckline that flatters your bust. Scoop for smaller busts, square or V for bigger.
3. Back cut that elongates. Scoop, open, or strappy backs visually lengthen the torso.
4. Lined gusset. Non-negotiable for a quality piece.

The best one-piece styles

Scoop back swimsuits

Flattering across body types because the scoop elongates the back and draws the eye away from the hip line. Our Siren Swimsuit uses this cut.

Plunge necklines

Work well for smaller to medium busts. A V-plunge elongates the torso. Avoid if you want full support or modest coverage.

Square necklines

Flattering for fuller busts. The straight line across the top of the bust creates structure.

High-leg cuts

Elongate the leg line. Work for most body types but particularly flattering on petite frames and athletic builds.

Why a one-piece is a holiday essential

• Works for activities where a bikini would shift (snorkelling, paddleboarding, climbing boat ladders).
• Doubles as a going-out top under high-waisted trousers or a long skirt.
• More sun protection across the torso.
• Tighter, cleaner silhouette in photos.

Our best pick

The Siren Swimsuit is our most popular one-piece. Available in multiple prints, cut with a scooped back and a structured front panel. Double-layered Lycra holds shape through repeated wear.

Shop the collection: Swimsuits

Common questions

Are one-pieces more flattering than bikinis? They are different. A one-piece gives you a cleaner silhouette and more support. A bikini gives you more flexibility and more skin. Neither is more flattering in the abstract.

Can I wear a one-piece as a going-out top? Yes. A plunge one-piece under high-waisted trousers or a long skirt works as a clean evening look.

Are one-pieces good for activities? Better than bikinis for anything involving movement: snorkelling, paddleboarding, boat days. They stay put.

What neckline is most flattering for a fuller bust? Square or V. Avoid very deep plunges without a support panel.