Plus Size String Bikini Underwear

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When it comes to feeling confident and comfortable in your own skin, the right underwear can make all the difference. Designed with the modern curvy woman in mind, these bikini underwear combine style, support, and a perfect fit to help you embrace your unique beauty. Whether you're lounging by the pool or simply want a little extra sass in your everyday wardrobe, these plus-size string bikini underwear are here to empower you to feel fabulous from the inside out.

The String Bikini- Cotton
by CUUP

A low-rise cotton bikini with string details, offering minimal coverage and maximum comfort.

$20.00
The String Thong - Mesh
by CUUP

A lightweight mesh thong with minimal coverage, antimicrobial bamboo lining, and a seamless, breathable design.

$20.00
The Bikini - Mesh
by CUUP

A lightweight black mesh bikini offering minimal coverage with antimicrobial bamboo lining for comfort.

$20.00
Talco String Bikini
by COSABELLA

A black string bikini crafted from soft, breathable viscose for smooth, comfortable full coverage.

$28.00
Essential String Bikini Bottom
by Swimsuits For All

A blue string bikini bottom with adjustable side ties, moderate coverage, and UPF 50 sun protection.

~~$40.00~~

From $6.98
Save up to $33 (83%)
The Bikini - Micro
by CUUP

A black bikini-cut underwear made from ultra-breathable, buttery-soft microfiber with a no-dent, high-stretch waistband.

$20.00
The Extra Cheeky - Swim
by CUUP

A minimal coverage bikini bottom with a fully cheeky back, made from soft, stretchy, UPF 50 fabric.

$78.00
Triple String Swim Brief
by Swimsuits For All

A white, fully lined swim brief with triple-string sides, offering full coverage and UPF 50 protection.

~~$40.00~~

From $16.00
Save up to $24 (60%)

What customers like:
High quality material Versatile style Flattering design Great coverage Comfortable fit
Elite Bikini Bottom
by Swimsuits For All

A blue bikini bottom with adjustable side ties, low waist, and moderate coverage in nylon-spandex.

~~$50.00~~

From $2.97
Save up to $47 (94%)

What customers like:
Flattering fit High quality material Comfortable and stretchy Vibrant tie dye Adjustable side ties
Side Tie Swim Brief
by Swimsuits For All

A fully lined, side-tie swim brief in 80% nylon with UPF 50 protection and minimal coverage.

~~$40.00~~

From $2.97
Save up to $37 (93%)

What customers like:
Vibrant color Flattering fit Comfortable material Adjustable side ties Great coverage
Tie Front Bikini Bottom
by Swimsuits For All

A fully-lined tie front bikini bottom with full coverage and UPF 50 protection in nylon-spandex.

~~$48.00~~

From $33.60
Save up to $14 (30%)

What customers like:
Flattering fit Full coverage Confidence-boosting Comfortable Cute design
Side Ring Bikini Bottom
by Swimsuits For All

A fully lined bikini bottom with tummy-control mesh, offering full coverage in 82% nylon and 18% spandex.

~~$42.00~~

From $2.97
Save up to $39 (93%)
Lettuce Trim Swim Brief
by Swimsuits For All

A playful bikini bottom featuring lettuce trim, contrast stitching, and moderate coverage in soft nylon-spandex.

~~$48.00~~

From $19.20
Save up to $29 (60%)
The Cheeky Bikini - Modal Silk Rib
by CUUP

A black Modal Silk Rib bikini offering minimal coverage and a flattering, high-cut silhouette.

$20.00
The Cheeky Bikini - Modal
by CUUP

A high-cut modal bikini with cheeky back, minimal coverage, and antimicrobial bamboo lining for comfort.

$20.00
The Bikini - Botanical Lace
by CUUP

A black bikini with botanical lace, offering cheeky coverage and antimicrobial bamboo lining for comfort.

$24.00
The String Thong - Modal
by CUUP

A minimal coverage thong in soft, breathable Modal with antimicrobial bamboo lining for comfort.

$20.00
Beaded Side Tie Swim Brief
by Swimsuits For All

An adjustable black swim brief with beaded side ties and functional tunnels for customizable coverage.

~~$48.00~~

From $5.98
Save up to $42 (88%)
The Bikini - Modal
by CUUP

A soft black Modal bikini with a flattering V shape and antimicrobial bamboo lining for comfort.

$20.00
Encantata High Leg Bikini
by COSABELLA

A modern bikini with shimmering floral embroidery over sheer lace, inspired by the romance of Venice.

~~$48.00~~

From $28.75
Save up to $19 (40%)
Avventura String Thong
by COSABELLA

A delicate thong featuring geometric lattice designs inspired by the ambiance of an Italian lakeside veranda.

~~$55.00~~

From $38.25
Save up to $17 (30%)

Plus Size String Bikini Underwear

Plus size string bikini underwear is a standout choice for anyone looking to blend comfort, flexibility, and a touch of playful style into their everyday essentials. Designed with low-rise silhouettes and high-cut legs, these panties offer a flattering fit that sits smoothly below the belly button, making them a favorite for those who appreciate a barely-there feel without sacrificing support. The hallmark of string bikini underwear is its minimal side coverage—delicate, flexible strings or slim bands that hug the hips without digging in, allowing for a seamless look under everything from breezy summer dresses to fitted fall jeans. For plus size wearers, thoughtful design details like soft, no-dig waistbands and stretchy fabric blends—often featuring cotton with a hint of spandex or silky nylon-spandex mixes—ensure that each pair moves with your body, providing all-day comfort whether you’re heading to the office, relaxing at home, or out for an evening stroll as the days gradually cool.

When selecting plus size string bikini underwear, it’s worth considering both the practical and personal aspects of your wardrobe. Breathable cotton options are ideal for everyday wear, especially on warmer days when staying cool and dry is a priority, while mesh or satin blends bring a touch of luxury and a smooth finish under special occasion outfits. Many women find that the moderate back coverage and flexible fit of string bikinis make them a go-to for both daily routines and travel, easily packing into a weekender bag or gym tote without taking up space. These styles are also a thoughtful gift for friends or loved ones who appreciate comfort with a hint of allure—perhaps as part of a self-care package or as a fun addition to a bridal shower gift. With sizing that often extends through 3XL, 5XL, or higher, and multi-pack options for stocking up, there’s a fit and style for every body and every preference.

As you refresh your underwear drawer for the transition from late summer into the cozy months ahead, plus size string bikini underwear offers the versatility to match your changing wardrobe and lifestyle. Whether you’re pairing them with loungewear on a slow weekend morning or slipping them under sleek workwear, the right pair can boost your confidence and comfort all day long. If you’re interested in exploring more options that celebrate curves with supportive, stylish design, take a look at our collection of Plus Size Underwire Bikini Swimwear for even more ways to feel fabulous in your own skin.