Best One-Piece Swimsuits for Every Fit, Budget, and Body Type

The best one-piece swimsuits aren't one-style-fits-all. What works for a large bust won’t necessarily flatter a small one. A minimalist cut may not hold up during a surf session. And most suits don’t come close to accommodating long torsos or plus-size curves comfortably.

That’s why this guide doesn’t name just one “best” — it highlights ten. Each swimsuit here was selected for how well it fits a specific need: bust support, waist definition, extended sizing, budget, sustainability, and more. If you’ve struggled to find a one-piece that actually fits you, start here.

‎

1. Best Overall Fit & Style: Andie Tulum One-Piece

Among the best one-piece swimsuits for fit and style, the Andie Tulum stands out for its clean lines, tailored coverage, and body-inclusive sizing. Its minimalist silhouette flatters a wide range of shapes, while details like adjustable straps, optional shelf bra, and multiple torso lengths make it easy to dial in the right fit. The design is timeless, the fabric holds up, and the sizing is unusually thoughtful — a rare combination in a category often dominated by aesthetics over function.

Why it stood out:

• Comes in standard, long, and short torso options
• Customizable support with removable cups and shelf bra
• Refined, versatile design that balances comfort and polish

Editor’s Note

This isn’t a dramatic swimsuit, but it earns its place by doing the small things right — especially in sizing. If you’ve found most one-pieces either pinch or sag in the wrong places, this one offers more room to get the fit right.

‎

2. Best for Large Busts: TA3 Lifty One-Piece

Supportive swimwear rarely gets the details right — but this one does. The TA3 Lifty earns its place among the best one-piece swimsuits for large busts thanks to its corset-style back, sculpting fabric, and lift-without-compression design. It provides a structured, flattering shape that stays secure without wires, relying instead on tension and tailoring. It’s engineered more like shapewear than swimwear — and it shows.

Why it stood out:

• Adjustable compression with lace-up back offers tailored bust lift
• Wide shoulder straps distribute support without digging
• Designed to contour without flattening the chest

Editor’s Note

Most “supportive” suits end up being either too aggressive or too flimsy. This one finds a controlled middle — strong where it needs to be, but not restrictive where it shouldn't be.

‎

3. Best for Small Busts: Anne Cole Straight-Neck Draped One-Piece

Subtle structure and flattering draping make this one of the best one-piece swimsuits for small busts. The Anne Cole Straight-Neck One-Piece uses gentle ruching and a straight neckline to enhance curves without heavy padding or dramatic shaping. It’s not trying to create cleavage — it’s designed to contour naturally and elegantly, especially for those who prefer a minimal, unfussy fit that still adds shape.

Why it stood out:

• Draping and ruching offer natural contour without bulk
• Straight neckline gives a clean, elongating line
• Light construction flatters without adding weight

Editor’s Note

Some suits try to add volume where it’s not needed. This one doesn’t. If you're after a quieter, more natural contour, this is one of the few that gets there by design, not trick.

‎

4. Best Plus-Size Fit: Summersalt The Sidestroke

The Sidestroke is one of the best one-piece swimsuits for plus-size fit because it doesn’t overcompensate — it simply fits well. The diagonal seaming provides structure and shaping without relying on wires or panels, while the compressive fabric offers support that holds up through movement. Available up to size 26, it’s one of the few options that’s both size-inclusive and thoughtfully designed.

Why it stood out:

• Diagonal seams create a flattering, asymmetric silhouette
• Compressive material offers support without stiffness
• Extended sizing up to 26 with consistent construction across sizes

Editor’s Note

Fit at larger sizes often means compromise — tighter straps, awkward cuts, or inconsistent materials. This one holds its shape without squeezing or slipping, and that alone sets it apart.

‎

5. Best for Long Torsos: FOREST Square Neck One-Piece

Length is the detail most one-piece swimsuits overlook — and it’s where the FOREST Square Neck quietly excels. The longer cut adds vertical room without distorting proportions, and the square neckline balances that length with a grounded, architectural frame. Designed by a swimwear atelier that focuses on tailored fits, it’s one of the few suits that feels built, not just stretched.

Why it stood out:

• Extra torso length without sacrificing shape or tension
• Square neckline adds structure and visual balance
• Designed and made in small runs for precise construction

Editor’s Note

A longer torso shouldn’t mean adjusting every five minutes. This one doesn’t force the fit — it follows the line of your body, and that’s exactly the point.

‎

6. Best for Active Use: Speedo Endurance+ Solid One Piece

Many of the best one-piece swimsuits for active use fall short when it comes to everyday comfort — but the Speedo Endurance+ manages both. Designed for lap swimming, water sports, and regular wear, it resists chlorine, dries quickly, and stays put through movement. No padding, no frills — just durable fabric and a cut that doesn’t shift mid-stroke.

Why it stood out:

• Chlorine-resistant Endurance+ fabric holds shape over time
• Thin straps and athletic cut allow full range of motion
• Secure fit that doesn’t shift during activity

Editor’s Note

This isn’t built for lounging — and it doesn’t pretend to be. It’s the suit you grab when performance matters more than polish.

‎

7. Best Minimalist Style: La Vie en Rose Balconette One-Piece

For those who want simplicity without losing structure, this is one of the best one-piece swimsuits for minimalist style. The balconette neckline adds subtle shape, while the solid color and clean lines keep the look understated. There’s no ruching, contrast piping, or dramatic cut-outs — just a sleek silhouette that does exactly what it needs to.

Why it stood out:

• Smooth, unembellished design with a flattering neckline
• Understated cut for a clean, unfussy profile
• Aesthetic focus on shape over detailing

Editor’s Note

Minimalism in swimwear often means bland or boring. This avoids both by focusing on form — not distraction.

‎

8. Best Budget Buy: CUPSHE Deep V-Neck One-Piece

Value doesn’t have to mean disposable — and this is one of the best one-piece swimsuits under $50 that still feels wearable beyond a single season. The CUPSHE Deep V-Neck offers more shape than expected at this price point, with removable padding, adjustable straps, and a lined interior. The plunge front adds visual length, while the back ties offer some control over the fit.

Why it stood out:

• Affordable price without total design compromise
• Removable cups and adjustable straps for fit flexibility
• Deep V neckline adds elongation and contrast

Editor’s Note

This won’t compete with premium brands on construction — but it punches above its weight for casual trips, backups, or fast replacements.

‎

9. Most Stretch & Flexibility: La Vie en Rose Recycled-Fibers One-Piece

Flexibility is often treated as an afterthought in structured swimwear. This suit stands out among the best one-piece swimsuits for stretch and flexibility because it uses recycled fibers to deliver give without losing its line. It holds shape through movement, softens pressure points, and adapts without sliding out of place.

Why it stood out:

• Flexible material adapts without sagging or rolling
• Smooth seams reduce pressure points and marks
• Made from recycled fibers with an easy-wear finish

Editor’s Note

Stretch doesn’t matter until it does. When you need more room, less pressure, or just a suit that shifts without slipping — this one holds up quietly.

‎

10. Best Eco-Friendly Option: Vitamin A Yara Wrap One-Piece

Sustainability in swimwear usually comes with trade-offs — but not here. The Vitamin A Yara Wrap is one of the best one-piece swimsuits for eco-conscious design, pairing recycled nylon fabric with a structured, adjustable silhouette. The wrap style flatters without relying on padding, and the brand’s supply chain transparency backs up the claim with substance.

Why it stood out:

• Made from EcoLux, a recycled nylon blend with a luxe finish
• Adjustable wrap waist offers a customizable, secure fit
• Brand is known for transparency and low-impact production

Editor’s Note

Plenty of suits call themselves sustainable, but few are this clear about how. This one doesn’t lead with the look — and that’s part of why it works.