Exploring the Different Types of Bikini Tops: A Comprehensive Guide
There are more than a dozen distinct bikini top styles, and each one fits differently, supports differently, and suits different body types. Whether you're shopping for a C cup that needs structure or a small bust that wants a natural shape, the style you choose matters as much as the size.
This guide covers every major bikini top style, who it works best for, and what to look for when buying.
Halterneck Bikini Tops
Halterneck tops tie or clasp behind the neck, redistributing the weight of the bust upward rather than relying entirely on the band. This makes them one of the most practical choices for larger busts — the neck strap takes on real load-bearing work. Wide-set neck ties are more comfortable than thin ties over long wear. The main tradeoff is a visible tan line at the neckline.
Triangle Bikini Tops
The classic minimal bikini. Triangle cups with thin ties at the neck and back give a clean, unstructured look that works best for smaller busts and athletic frames where the cup doesn't need to do much containment work. If you want the most natural shape with the least fabric, this is it.
Plunge Bikini Tops
A deep V-neckline with a low centre gore that sits close to the sternum. Plunge tops create the illusion of a fuller bust and work well for smaller to medium cup sizes. They're not the right choice if you need containment — the open neckline means less structure at the centre.
Bandeau and Strapless Bikini Tops
Bandeau tops wrap around the bust without straps, relying entirely on band tension and fabric elasticity for support. They're ideal for smaller busts and for sunbathing when you want to minimise tan lines. For larger busts, look for bandeau styles with a structured inner cup, underwire at the base, or a detachable neck strap.
The Harriet Patchwork Bikini from Be Juliet is a crop bandeau with adjustable halter straps — if you're a C cup or above, size up to get the front panel height that provides real coverage.
Underwire Bikini Tops
The most structured option available. Underwire bikini tops function similarly to a bra, with a curved wire running beneath each cup to lift, separate, and contain the bust. These are the go-to for D cup and above, especially if you want a defined shape rather than just coverage. Make sure the wire is fully encased in fabric — bare wire tips irritate quickly in the sun and salt water.
High-Neck Bikini Tops
High-neck styles cover the upper chest as well as the bust, functioning more like a crop top than a traditional bikini. Built-in cups or structured lining keep everything in place, making these ideal for active water use — paddleboarding, snorkelling, anything where a standard top might shift. Good for any bust size but particularly useful for larger busts that need secure coverage.
Tankini Tops
A tankini top is essentially a tank top designed to be worn as swimwear. It covers the midriff as well as the bust and is usually paired with a separate bikini bottom. Tankinis offer more modesty than a traditional bikini top and work well for anyone who wants more torso coverage — postpartum, during pregnancy, or simply a personal preference.
String Bikini Tops
Fine ties at the neck and back with minimal cup coverage. String tops are similar to triangle tops in that they provide little structure — they're best for smaller busts and relaxed beach days where minimal fabric is the priority.
Fringe Bikini Tops
Fringe detailing along the hem or across the cups adds visual texture and movement. The fringe itself can help create the illusion of a fuller bust on smaller frames. These work well for any body type and add a bohemian feel to beachwear.
How to Choose by Body Type
Small bust: padded cups, ruffles, or plunge styles add visual volume without excess fabric.
Large bust (C cup and above): underwire, halterneck, or high-neck styles provide the structure needed. Avoid thin-strap triangle tops or unsupported bandeaus.
Athletic frame: triangle, string, or plunge tops complement a lean silhouette. Ruffles and fringe add softness.
Hourglass: most styles work. Halterneck and underwire enhance the natural shape best.
For a complete guide that covers full swimsuit sets — not just tops — by body shape and proportion, see the best swimsuits for every body type.
Caring for Your Bikini Tops
Hand wash in cold water with mild detergent after each wear. Press gently — never wring. Lay flat to dry in the shade rather than in direct sun, which degrades elastic and fades colour. Rinse immediately after pool use to remove chlorine before it breaks down the fabric.
Before you order, it helps to know that swimwear sizing doesn't work the same way as regular clothing — especially for tops and bottoms within the same set.
FAQs: Types of Bikini Tops
Q: What are the different types of bikini tops called?
A: The main styles are triangle, halterneck, bandeau, underwire, high-neck, plunge, string, tankini, strapless, and fringe.
Q: Which bikini top is best for a large bust?
A: Underwire, halterneck, and high-neck styles all provide structured support for larger busts. If you want a bandeau or crop style, look for one with a built-in inner cup or adjustable neck strap.
Q: Which bikini top is best for a small bust?
A: Triangle, plunge, padded, and ruffled styles all work well. These create shape and visual volume without excess coverage.
Q: What bikini top is best for implants?
A: Underwire and padded styles provide the best lift and shape. The structure of the cup holds the implant in the correct position rather than relying on the implant to fill the cup naturally.
Q: What is a trikini?
A: A trikini has three separate pieces — a bikini bottom and two separate pieces for the top, often connected by thin straps at the sides or centre.
Q: What's the difference between a bandeau and a strapless bikini top?
A: They're often used interchangeably — both are strapless styles that wrap around the bust. A bandeau is typically a straight tube of fabric; a strapless top may have more cup shaping or structured elements while still being strapless.