Fit Guide5 min read

Plus-Size Cotton Brief Size Guide: Fit and Coverage

Measure your hips at the fullest point and match that number to the size chart. Full-coverage briefs sit at the natural waist with front-and-back coverage.

Smiling woman in a robe putting folded full-coverage cotton briefs into a dresser drawer

Your hip measurement is the number that decides your size in a full-coverage cotton brief. These briefs sit at the natural waist with full front and back coverage, so size down only if you fall between two sizes and your waist is the smaller measurement. Everything below walks through how to get there, and what to do if a pack arrives feeling too big.

Woman wrapping a soft measuring tape around the fullest part of her hips over lounge pants
Measure over thin clothing and keep the tape level all the way around for an accurate hip number.

How to measure for a plus-size brief

You need two numbers: hips at the fullest point and waist at the natural waist. It takes about a minute with a soft tape measure.

  1. Wear thin, smooth clothing or measure over your current underwear.
  2. Stand with feet together and wrap the tape around the fullest part of your hips and seat. Keep it level and snug, not tight.
  3. Find your natural waist, the narrowest point of your torso, usually just above the belly button. Measure there the same way.
  4. Write both numbers down and open the size chart on the product page you're shopping.

Which measurement decides your size?

Lead with your hips. A brief has to cover your hips and seat comfortably, and the waistband elastic can adjust a little at the waist, but the cotton body can't make extra room through the hips.

  • Hips fall squarely in one size: choose that size.
  • Hips fall between two sizes, and your waist is the smaller measurement: the smaller size is usually the better choice, since an oversized waistband is what tends to slip and roll.
  • Hips fall between two sizes, and your waist is fuller: take the larger size so the waistband sits at your natural waist without digging in.

Working through a real question: 35-inch waist, 44-inch hips

One shopper asked exactly this. The answer comes from the hip column: find 44 inches on the size chart for the brief you want and choose that size.

With a 35-inch waist and 44-inch hips, the waist is clearly the smaller measurement. So if 44 inches lands between two sizes on the chart, the smaller one is the one to try first. That keeps the waistband snug at the natural waist, where full-coverage briefs are designed to sit.

Panty sizes are their own scale

Cotton brief sizes don't match your clothing size. Catherines clothing runs in sizes 14W–40W and 0X–6X, while both cotton brief packs below come in sizes 7–16.

That means a size 22 pant doesn't translate to a "22" in underwear, and guessing from your jeans size is a common reason packs arrive too large. Your hip measurement against the brief's own chart is the reliable route. If you're browsing beyond packs, the same approach works across all plus-size panties.

What does full coverage mean on a cotton brief?

Full coverage means the brief rises to the natural waist and covers fully front and back, with an easy leg opening instead of a high-cut leg.

  • Natural-waist rise: the elastic waistband sits at your natural waist, not below the belly.
  • Full front and back coverage: a secure feel that stays in place through the day.
  • Easy leg opening: a classic brief silhouette with room for movement.
  • Tag-free waistband: nothing to scratch or irritate, which shoppers single out in reviews.

If you want the full range of styles cut this way, browse full-coverage brief panties.

10-pack or 5-pack: which cotton brief pack fits your routine?

Both packs share the same sizing, fabric and full-coverage cut, so your size carries over. The difference is how many pairs you get and how the colors are assorted.

If you change underwear daily and do laundry once a week, our full-coverage cotton brief 10-pack covers more days between washes. If you'd like to test your size before stocking up, start with the 5-pack of tag-free cotton briefs.

Comparing the two best-selling full-coverage cotton brief packs
Feature10-pack5-pack
Sizes7–167–16
FabricBreathable cottonBreathable cotton
WaistbandTag-free elastic that sits at the natural waistTag-free elastic that stretches gently without digging in or rolling
AssortmentTwo of each color, in colors and printsOne of each color, in solid and multi-color packs
CareMachine washableMachine washable

What if your pack feels too large or the waistband rolls?

A brief that feels baggy, or a waistband that rolls down, usually means the size is one step too big. "Too large" is the most common fit note shoppers leave on the 5-pack.

  • Re-measure your hips rather than relying on a size you've worn for years.
  • Check where the waistband sits. It should rest at your natural waist; if it slides lower, the elastic has less to grip.
  • Go by the chart, not habit. Many shoppers size up "for comfort," but the cotton body already has an easy fit.

When the size is right, customers describe the waistband the way the product data does: it stretches gently without digging in or rolling.

How to keep cotton briefs fitting wash after wash

Machine wash and follow the care label. Cotton is breathable and soft, but high dryer heat can tighten the fit and wear down elastic sooner.

  • Wash with similar colors, especially with assorted prints.
  • Choose a lower dryer setting, or line dry the waistband area.
  • Rotate through the whole pack so each pair wears evenly.

Once you know your size, restocking is simple. Browse all Catherines cotton panty packs to find the colors and counts that suit you, and come back to the same size each time. We Fit You Beautifully®, down to the basics.

Frequently asked questions

Do cotton briefs shrink?

Cotton can tighten slightly if it is washed or dried with high heat. Both packs are machine washable; follow the care label and skip the hottest dryer setting to keep the fit you chose.

Does the fabric stretch?

The give comes mainly from the elastic waistband, which on the 5-pack stretches gently without digging in or rolling. The cotton body is soft and breathable, so fit through the hips depends on choosing the right size.

What size underwear is a size 22?

There is no fixed conversion. Panty sizes 7–16 are a separate scale from clothing sizes, so measure your hips and check the product's size chart rather than translating from your dress or pant size.

Should I size up for a looser fit?

Usually not. Shoppers who sized up often report the brief feels too large, with a waistband that slips or rolls. Start with the size your hip measurement points to.