Date: 22 Jun 2026
Every body type has been an ideal of beauty in different eras and different places. The rounded forms of the Venus of Willendorf, the full figures in Rubens' paintings, the narrow waist of the Victorian era, the athletic body of the 20th century — standards change, but the female body in all its diversity remains the same. The true ideal is the body we feel good in.
Every body is beautiful when dressed in comfort and radiating confidence — regardless of size. Well-chosen, stylish clothes need the right foundation, and that starts with underwear. When the cut follows the body's proportions, underwear goes unnoticed, unseen, and out of the way — it simply works. Here's what's worth paying attention to when choosing.
Athletic Figure — When Shoulders Are Wider Than Hips
With this body shape, the hips are narrower than the shoulders and the waist isn't particularly defined. The right underwear can help create visual balance — not through tricks, but through cuts that add volume and emphasis to the lower half of the body.
Brazilian briefs are a great choice — the cut at the back naturally emphasises the area and creates visual volume. Look for styles with a medium to fuller cut and a wider side panel. Boxer briefs work on the same principle.
High-waist bikinis also balance proportions — they define the waist and create a more pronounced transition between the upper and lower body.
A Symbol of Femininity Through the Ages — When Hips Are Wider Than Shoulders
Here the hips and waist are wider than the shoulders. Choosing underwear is about finding a cut that fits well without digging in or bunching up.
Bikinis with a low or mid-rise waist are a comfortable option — they don't add extra emphasis to the hips and don't press against the widest point of the body. It's important that the side panel isn't too wide, as this can create additional volume at the hip.
Thongs are a surprisingly comfortable choice for wider hips — most styles have no wide side panel to dig in or leave marks. They work particularly well under fitted clothing.
A Balanced Figure — Defined Waist
When the waist is clearly defined — visibly and significantly narrower than the bust and hips — almost any cut works well. The proportions are balanced and underwear fits naturally.
With this shape, underwear is the least restrictive — the freedom of choice is complete. Bikinis, Brazilians, boxer briefs, thongs — all cuts fit naturally because the body itself is balanced.
The choice is entirely down to personal preference — comfort, look, occasion. For everyday wear, cotton bikinis or Brazilian briefs with a mid-rise waist are the practical option. For more special occasions, thongs or styles with lace details emphasise a defined waist particularly well.
The one thing worth paying attention to is fabric — underwear made from smooth microfibre or fine cotton won't show through fitted clothes and won't disrupt the silhouette.
A Rounded Tummy — Feminine and Natural
When the tummy is rounder, the cut of the underwear matters more than with other body shapes. Bikinis with a medium or high soft waistband are the best everyday choice — they cover the tummy without pressing against it. Brazilian briefs also work well, as long as the waist isn't too low and the elastic is soft.
Thongs are a style that surprises — no elastic around the tummy, no bunching, no visible lines under clothes. A practical solution under fitted garments.
Shaping underwear is a separate category — suitable when we want a smooth silhouette under a specific outfit. It gently smooths the figure without excessive pressure. The key is choosing the right size.
In Short
Underwear works best when it follows the shape of the body — not forcing a correction. For wider shoulders, Brazilian briefs and boxer briefs create visual balance. For wider hips, look for a low or mid-rise waist and avoid wide side panels. For a defined waist, the focus is on fabric. For a rounder tummy — a soft, higher waistband without constriction.
For every body shape, size is measured at the widest point of the hips. If there's a significant difference between the hips and waist, choose the larger size and accept that the waist will have a little extra room.
Whatever your body type, what matters most is that underwear is made from carefully selected quality fabrics, cut for comfort, and finished with attention and precision in every detail. Browse the full collection of women's underwear at SIA Underwear — sizes S to 6XL, made in Bulgaria.
Athletic Figure — When Shoulders Are Wider Than Hips
A Symbol of Femininity Through the Ages — When Hips Are Wider Than Shoulders
A Balanced Figure — Defined Waist
