Guide to String Swimsuits, Plunging Bikinis and Tanning Swimsuits

Whether you are heading to a New Zealand beach, a backyard pool, or a summer getaway, the swimwear you choose can make a real difference in both comfort and confidence. From barely-there string styles to coverage-focused tanning designs, understanding what each swimsuit type offers helps you make a smarter, more satisfying choice.

Guide to String Swimsuits, Plunging Bikinis and Tanning Swimsuits

Swimwear trends shift every season, and 2026 is no exception. Across New Zealand, shoppers are increasingly looking for styles that balance aesthetics with practicality. Three styles in particular have been generating significant attention: string swimsuits, plunging bikinis, and tanning swimsuits. Each serves a distinct purpose, suits different body types and occasions, and comes with its own set of considerations when it comes to fit, fabric, and function.

What Is a String Swimsuit?

A string swimsuit is defined by its minimal coverage and adjustable ties at the sides, neck, and back. These ties allow the wearer to customise the fit, making them a popular option for those between standard sizes or looking for a more personalised silhouette. String swimsuits are typically two-piece designs, though one-piece variations with string detailing also exist. The appeal lies in their versatility: they can be tightened for secure water activity or loosened for sunbathing. Fabrics commonly used include nylon-spandex blends, which offer stretch, quick-drying properties, and resistance to chlorine and saltwater. For New Zealand summers, where UV exposure is notably high, pairing a string swimsuit with strong SPF protection is especially important.

Plunging Bikinis Heading into 2026

Plunging bikinis feature a deeply cut neckline on the top piece, creating a low V-shape that elongates the torso and draws attention to the decolletage. Heading into 2026, this style continues to be prominent on international runways and local retailer shelves alike. The design works particularly well for those with smaller bust sizes, as the open neckline creates the illusion of more volume. However, structured plunging bikinis with underwire or moulded cups are also available for those seeking more support. When shopping for plunging bikinis in New Zealand, look for tops with secure fastening systems, such as clip-back closures or thick ties, to ensure the swimsuit stays in place during movement. Some styles also incorporate ruching or hardware details that add visual interest without compromising the clean lines of the silhouette.

Tanning Swimsuits and Minimising Tan Lines

Tanning swimsuits are specifically designed to reduce or eliminate visible tan lines. They typically feature strapless tops, low-rise bottoms, thong-cut backs, or reversible panels that allow for repositioning throughout the day. Some designs include cut-out sections strategically placed to allow more even sun exposure across the torso and hips. These swimsuits are a practical choice for those who want a uniform tan for events, holidays, or everyday confidence. When choosing a tanning swimsuit, consider the fabric weight and how it interacts with sun exposure. Lighter fabrics warm up quickly, while thicker materials may create more defined lines. Many tanning-specific styles are made with minimal seaming and flat-edged finishes to further reduce the appearance of marks on the skin.


Style Key Feature Best For Price Estimation (NZD)
String Swimsuit Adjustable ties, minimal coverage Customised fit, sunbathing $40 – $130
Plunging Bikini Deep V neckline, elongating cut Torso definition, beach fashion $60 – $180
Tanning Swimsuit Minimal straps, even tan design Reducing tan lines, sunbathing $50 – $160
One-Piece with Cutouts Covered yet revealing panels Versatility, varied occasions $70 – $200
Bandeau Bikini Strapless top Strapless tanning, minimal lines $45 – $140

Prices, rates, or cost estimates mentioned in this article are based on the latest available information but may change over time. Independent research is advised before making financial decisions.

Choosing the Right Fit and Fabric

Regardless of style, fit and fabric quality are the most important factors when selecting a swimsuit. Always check sizing charts from individual brands, as swimwear sizing can differ significantly from standard clothing sizes. Look for double-lined fabrics, especially in lighter colours, to ensure opacity when wet. Chlorine-resistant fabrics are a practical choice if you plan to use the swimsuit in pools regularly. For ocean use around New Zealand, saltwater-resistant materials extend the life of your swimwear considerably. Most quality swimsuits will specify their fabric composition on the label, and a blend of at least 15–20% elastane ensures lasting stretch and shape retention.

Caring for Your Swimwear

Proper care extends the lifespan of any swimsuit style. Rinse your swimwear in cold fresh water immediately after each use, particularly after ocean or pool swimming, as salt and chlorine degrade elastic fibres over time. Hand washing with a gentle detergent is recommended over machine washing, which can cause pilling or distortion of ties and hardware. Avoid wringing out string or tie-detail swimwear, as this can stretch the ties unevenly. Lay swimsuits flat to dry in a shaded area rather than direct sunlight, since prolonged UV exposure can fade fabric and weaken elastane. Rotating between two or more swimsuits during a holiday or summer season also gives each piece time to recover its shape.

With so many swimwear styles available to New Zealand shoppers, understanding the specific features and purposes of string swimsuits, plunging bikinis, and tanning swimsuits allows for more confident and informed purchasing decisions. Whether prioritising sun coverage, fashion-forward design, or an even tan, there is a well-crafted option to suit every preference and occasion.