The one piece has quietly won. Somewhere in the last decade it stopped being the thing you bought when you did not feel like wearing a bikini and became the thing you buy first - the piece that gets worn to the beach, under a shirt at lunch, on a boat, on a plane, and packed for every trip because it takes up almost no room and solves an entire day of dressing.
We have been selling swim from Hall Street in Bondi Beach since 1995, which means we have watched a great many women try on a great many one piece swimsuit styles in a changing room. What follows is what we have learned about which ones actually get worn.
Why the One Piece Earns Its Place
A bikini is two decisions. A one piece is one. That sounds trivial until you are standing in front of a wardrobe at seven in the morning trying to get out the door for a swim, and it turns out to be the reason the maillot gets reached for more often than anything else in the drawer.
It also does something a two-piece cannot: it works as clothing. A good one piece under high-waisted jeans or a linen skirt is simply a bodysuit that happens to be waterproof. That single fact is why it travels so well - one piece, one small square of fabric in the suitcase, and you have covered the beach, the pool, the boat and a dinner where you did not plan to still be wearing swim.
And it holds you. Not in the compression sense, which nobody wants, but in the sense that a well-cut one piece stays exactly where you put it. You can dive, sit, walk up a beach and lie down without a single adjustment. That is the whole promise.
Necklines, and What They Actually Do
The neckline is the single biggest decision, because it sets both the shape of the suit and how much of it you can wear as clothing.
A square neck is the most versatile line in swim. It sits high enough to read as a top, it flatters almost every chest, and it gives a clean horizontal that balances a wider hip. The Hunza G Square Neck Swim in Black is the shape we recommend more than any other, precisely because it stops being obviously swimwear the moment you put a shirt over it.
A scoop or round neck reads softer and more classic. It suits a smaller bust particularly well and photographs beautifully in bright light because it opens the collarbone. The Hunza G Domino Swimsuit in Black and the same shape in a warmer tone, the Hunza G Domino Swimsuit in Blush, sit in this register.
Halter and asymmetric necklines do something different again - they create a diagonal, which lengthens the torso and adds a bit of drama. They are less useful under clothing but very good on their own. The Jatali Swim one-pieces work in this territory, with sculptural straps and draped detailing that make them read closer to a bodysuit than a swimsuit. The Jatali Swim Frida One Piece in Neroli and the Jatali Swim Emina One Piece in Mystic are the two we point to when someone wants a suit that carries a whole outfit on its own.
Leg Line, and Why It Matters More Than You Think
The leg opening does more for proportion than almost anything else, and it is the thing most people never consider before buying.
A high-cut leg lengthens. It raises the visual hip line, which makes the leg read longer, and it is the reason so many suits from the last few years sit where they do. It is flattering on almost everyone but it demands a bit of confidence, and it is less practical if you are actually swimming laps.
A moderate or boy-leg cut covers more and sits flatter across the top of the thigh. It is the more comfortable choice for a full day on sand, for anyone who does not want to think about where the fabric is sitting, and for swimming properly rather than decoratively.
The back matters too. A scoop back is easy and universally comfortable. A low or crossed back looks striking but limits what you can wear over the top and how much support you get. Be honest about which of those you actually need.
Fabric Is the Whole Game
This is where the money goes, and where the difference between a suit that lasts three summers and one that lasts three weeks lives.
Crinkle stretch - the textured, seersucker-like fabric that Hunza G built its name on - is the most forgiving thing in swim. It stretches to fit a genuinely wide range of bodies, it does not cling when wet, it dries quickly, and the texture disguises everything a flat fabric reveals. It is also why one size works: the fabric does the sizing. If you have never worn it, read our guide to how Hunza G sizing actually works before you buy.
Smooth matte jersey and double-lined nylon feel more like clothing, hold a sculptural shape and photograph cleanly. They need to be properly lined to avoid transparency when wet, which is a good quick test of quality - hold the suit up to the light and see what happens.
Whatever you choose, chlorine and sunscreen are the enemies, not seawater. Rinse in cool fresh water as soon as you take it off, dry it flat in the shade, and never wring it. Our full guide to washing swimwear covers the rest.
How We Actually Wear a One Piece in Bondi
Here, a one piece is rarely just swimwear. It is the first layer of a whole day.
Morning: swim at Bondi, then walk up Hall Street for coffee with a linen shirt thrown over the top and nothing else changed. Add a piece from the linen edit and the outfit is finished.
Midday: high-waisted jeans or a wrap skirt over the suit, a pair of frames from the designer sunglasses collection, and a hat from the hats edit for the walk between Tamarama and Bronte.
Afternoon: a towelling layer for the walk home. A piece from the beach robes edit, a beach towel in a matching tone and a beach bag that closes properly is the complete coastal kit.
The whole swimwear edit is built around this way of wearing swim - not as a single-purpose garment but as the thing the rest of the day is assembled on top of.
Building a Swim Wardrobe That Lasts
Two suits is usually the right number. One black or deep neutral that goes with everything and reads as clothing under a shirt. One with colour, texture or a strong neckline that you wear when the swim itself is the outfit.
Beyond that, buy for the water you actually swim in. If it is ocean pools and surf, prioritise fit and coverage over drama. If it is a boat, a pool or a holiday, you can afford a suit that is more sculptural and less practical. Between the Hunza G, Fae Swim and Montce Swim ranges, most women find both ends of that within one visit.
Come and try them on if you can - fit is the whole thing with swim, and a changing room answers questions a photograph never will. You can find opening hours and directions on our visit us page. Tuchuzy ships worldwide, including across Australia and to the United States, so a swimsuit chosen in Bondi reaches whichever coastline you are swimming off.
Your Questions Answered
What is the most flattering one piece swimsuit shape? There is no single answer, but a square neck with a moderately high leg suits the widest range of bodies. The square line balances the shoulders, and a slightly raised leg opening lengthens without exposing more than most people want. If you are unsure, start there and adjust from what you learn.
How should a one piece swimsuit fit? Snug everywhere, tight nowhere. You should be able to pull the fabric a couple of centimetres away from your body at the hip and have it snap back. If the straps dig in when you raise your arms, or the leg openings leave marks, it is too small. If it wrinkles across the torso when you stand still, it is too big.
Do one piece swimsuits stretch out when wet? Good ones do not, in any meaningful way. Cheap ones do, because the elastane content is low and the lining is thin. Crinkle-stretch fabrics are particularly resistant to this because the texture absorbs the give rather than the seams.
Can you wear a one piece swimsuit as a bodysuit? Yes, and it is one of the best things about the category. A high or square neckline in a matte fabric reads as a top under jeans, a skirt or tailored shorts. Choose a suit with a fully lined front and a back you are happy to have visible, and it works as clothing without any explanation.
How many swimsuits do I actually need? Two, for most people, plus a bikini if you like one. A neutral that works as a layer and one that stands alone. Rotating between two also doubles the life of both, because the elastane gets time to recover between wears.