Plus Size Lingerie up to 6XL

Plus size underwear up to 6XL — luxury maxi lingerie created for curvy women. Briefs, brazilian briefs, camisoles, slips and anti-chafing shorts. Bulgarian women's underwear in sizes 3XL, 4XL, 5XL, 6XL. Plus size lingerie made to order up to 10XL. Shop online!

PLUS SIZE FASHION — UNDERWEAR IS THE FOUNDATION

The times when fashion dictated impossible standards are over. Today we are witnessing a revolution in which the body positivity movement has taken over fashion runways and streets. We no longer need to strive for unrealistic ideals — the beauty of every woman is unique and deserves to be celebrated!

Curvy figures have long been a symbol of femininity. Plus size fashion is gaining momentum and more and more brands are offering collections from S to 6XL. Plus size clothing and maxi lingerie are now modern and accessible — the variety is enormous compared to before, when underwear for full-figured women could only be found in specialist stores.

Every woman is different and beautiful. For outerwear to fit well, it's best to start with comfortable plus size underwear tailored to your figure. Besides the right size, it's important to choose the most suitable style to highlight your best features. Comfort and elegance meet in our collection of quality plus size lingerie — whether luxurious or everyday.

PLUS SIZE UNDERWEAR

Beauty starts from within! The right lingerie for curvy women is the foundation of every great-looking outfit. It provides support, smooths the silhouette and prevents unwanted lumps and lines under clothing. For plus size women, the right underwear is even more important, as it can make an enormous difference to how clothes fit and how comfortable you feel in your own skin. Conversely, when underwear doesn't fit correctly — whether in style or size — it can be extremely uncomfortable and even painful. Straps that dig in, elastic that cuts and cups that don't sit properly can make a woman's day much harder than it needs to be.

Quality plus size underwear is specially designed to provide comfort with soft fabrics, wide straps and supportive construction. Proper support is essential for the bust and midriff. Cuts are deeper, bra straps are wider and cups provide the necessary support and lift.

When you feel comfortable and supported in your underwear, you automatically feel more confident. Well-chosen maxi lingerie can help smooth your silhouette, accentuate your curves and make you feel beautiful and sexy in any outfit.

PLUS SIZE UNDERWEAR — SIA UNDERWEAR

In the fast-paced world of fashion, it can be difficult to find quality plus size underwear that is both beautiful and comfortable. We understand this challenge and have dedicated ourselves to overcoming it. Our mission is to offer maxi lingerie in a variety of styles, fabrics and designs that will fit you perfectly and make you feel incredible. Whether you choose luxurious or everyday plus size lingerie, it will give you the confidence to be yourself. Our plus size underwear range in sizes 3XL, 4XL, 5XL, 6XL includes — see also our size guide:

Maxi briefs

Low-cut or full coverage, cotton, lace or tulle — all our plus size briefs are made from quality materials. Styles range from completely minimal to combinations of different fabrics, matched in a cohesive colour palette or in an eye-catching contrast finish.

Plus size thongs

Thongs are a favourite style for many women — they sit closer to the body, pair easily with almost any bra and often come in clean, minimal designs. When plus size thongs feature a high waist and a well-cut leg opening, they visually lengthen the legs and elongate the overall silhouette. They are also the go-to style for plus size erotic lingerie.

Plus size brazilian briefs

The style that combines the comfort of briefs with a more modern, sexy and youthful look. Brazilian briefs in plus sizes are a must-have in the wardrobe of every modern woman with a busy lifestyle who wants comfort, style and appeal all at once. Plus size brazilians come in both low and high waist options — a hybrid between briefs and thongs, they sit elegantly and pair effortlessly with a wide range of bras. Styles range from fully lace to intricate cut-out designs in luxurious maxi lingerie.

Plus size boyshorts

For women who prefer a sporty style and prioritise comfort. Our plus size boyshorts have a classic look and, depending on the desired effect, each woman can choose from fully cotton, high waist, low waist, with lace or without.

Plus size shapewear

Maxi shapewear visually slims and sculpts the body. Curvy women rely on this type of underwear to shape their silhouette. Plus size shapewear enhances the figure, creates a more elegant look and contributes to the confidence of fuller-figured women.

Plus size bodysuits, camisoles and blouses

Our collection includes tulle and cotton camisoles, lingerie bodysuits and bodysuit blouses in plus sizes, featuring elegant cuts and premium quality, crafted from soft stretch fabrics and finished with beautiful lace details.

Plus size anti-chafing shorts and thigh bands

Wearing dresses as a plus size woman is now possible without redness or chafing thanks to our anti-chafing shorts and thigh bands by SIA Underwear. Thigh bands in plus sizes are available up to 6XL and are crafted from highly elastic fine lace with a beautiful design, reinforced with silicone strips at the top and bottom to follow the widest part of the thigh. They stay perfectly in place throughout the day — and even when visible, they look incredibly sexy, like a wide modern thigh garter in a large size.

Our plus size anti-chafing shorts are also available up to 6XL, with an even wider range of styles. Models feature a high waist in fine, highly elastic polyamide-based fabrics such as tulle or microfibre, with legs in varying lengths, with or without lace trim.

Plus size slips

We offer plus size slips for skirts and dresses that prevent sheerness and static cling.

Plus size nightwear

At SIA Underwear online store, we also offer pyjama sets and nightdresses in plus sizes, because a woman who values herself deserves to look and feel great even at home or while sleeping. Our plus size nightdresses and pyjamas are made up to 6XL — beautiful as sleepwear and equally stunning as elegant loungewear.

WHAT MAKES US DIFFERENT

The perfect fit

We understand that every woman is unique and that a one-size-fits-all approach simply doesn't work when it comes to plus size underwear. That's why we offer a wide range of sizes and styles to ensure you find the maxi lingerie that fits you perfectly. Check our size guide for precise measurements.

Quality materials

We use only the finest materials to create plus size lingerie that is both beautiful and long-lasting. Our fabrics are soft, breathable and comfortable to wear all day long.

Stylish design

We believe that plus size lingerie should never be dull or plain. That's why we offer a variety of styles and designs — from everyday essentials to luxurious sexy lingerie for special occasions.

Expert advice

Our team is always ready to help you find the plus size lingerie that suits you best — the right size, style and fabric for your needs.

CUSTOM PLUS SIZE LINGERIE

At SIA Underwear, we value feedback from our customers and love making you part of the creative process. We constantly seek modern and contemporary solutions and are always open to new ideas. If you can't find your style or size, get in touch and we'll create plus size lingerie in a larger size than those available — for example 7XL, 8XL, 9XL or 10XL. There is no size limit. This means we can create underwear that is specially designed and made for you, according to your exact measurements and preferences — whether based on an existing style or as an entirely new bespoke design, created exclusively for you.

PLUS SIZE STYLE TIPS

Highlight your best features: Whether you have beautiful legs, elegant shoulders or a full bust, accentuate them with the right clothing. If you love your legs most, go for a skirt cut above the knee with a fitted silhouette. The top can be a loose blouse or shirt to skim over the waist. If you want to draw attention to your bust, choose a neckline that frames it beautifully.

Wear clothes that fit you well: Don't try to hide in oversized clothing. Clothes that suit your figure will highlight your strengths and make you feel more confident.

Experiment with colours and prints: Don't be afraid to wear bold colours and interesting prints. They can add personality and individuality to any look.

Accessories are your best friends: Accessories can transform even the simplest outfit. Use belts, scarves, jewellery and shoes to add style and character to your look.

Don't forget comfort: The most important thing is to feel comfortable in what you're wearing. The goal is to feel at ease and confident in your own skin.

FREQUENTLY ASKED QUESTIONS

What is the largest size available at SIA Underwear? Our standard plus size lingerie range goes up to 6XL. For special orders, we create custom plus size underwear up to 10XL based on individual measurements.

What types of plus size underwear do you offer? Our collection includes maxi briefs, brazilian briefs, thongs, boyshorts, camisoles, lingerie bodysuits, shapewear, anti-chafing shorts, slips, nightdresses and pyjamas — all available in sizes up to 6XL.

How do I choose the right size for curvy women? We recommend following our size guide, which includes precise measurements for waist, hips and rise. When in doubt, choose the larger size for a more comfortable fit.

What materials are used in your plus size lingerie? We use cotton, tulle, lace and microfibre from European suppliers. All fabrics are soft, breathable and gentle on sensitive skin.

Do you offer plus size erotic lingerie? Yes, we offer sexy lingerie, thongs and camisoles in plus sizes made from lace and tulle, perfect for special occasions.

How should I care for my plus size underwear? We recommend hand washing or a delicate machine cycle up to 30°C. Do not use bleach or a tumble dryer. Leave to dry naturally away from direct sunlight.

Can you make custom plus size lingerie above 6XL? Yes, we create bespoke plus size underwear up to 10XL on individual order. Contact us by phone or email for a consultation.

Can I wear a dress as a curvy woman without thigh chafing? Absolutely! We offer specially designed anti-chafing shorts and lace thigh bands in sizes up to 6XL.

Why choose SIA Underwear for plus size lingerie? SIA Underwear is a Bulgarian manufacturer with 25 years of experience, specialising in plus size lingerie. We produce entirely in Bulgaria, control every stage of the manufacturing process and create underwear for full-figured women with attention to every cut and detail.

Beauty is not a size — it's an attitude! Comfort and confidence go hand in hand! Forget dull and uncomfortable styles — the SIA Underwear plus size lingerie collection is designed to celebrate every curve and make you feel absolutely irresistible!

At SIA Underwear, we are dedicated to providing curvy women with maxi lingerie that is beautiful, comfortable and supportive — whether everyday, luxurious or erotic. We believe every woman deserves to feel confident and sexy in her own skin, and that the right underwear can make all the difference to her overall look and feel. Explore our plus size lingerie collection and discover your perfect styles today! Don't hesitate to contact us if you have any questions or need help finding the right fit. We're here to make you feel incredible!