Control / Shaping Brief

A control brief does the job a girdle once did, in lighter materials. Firm stretch fabrics, such as power mesh and nylon or polyester knits with a high share of elastane, compress the stomach, waist and hips into a smoother line. Many add a double-layer panel over the abdomen, bonded edges that do not dig in, and silicone at the waistband to stop it rolling down. Lengths range from mid-rise briefs to high-waist styles that reach under the bust and to thigh-length shorts.

Control is usually labeled light, medium or firm. The brief suits wearers who want a smooth line under fitted dresses and skirts, and it is sold mostly in nude and black so it stays out of sight. Firm control is warm and tight over a full day, and many people keep it for occasions.

The modern shapewear business was built around garments like this. Sara Blakely founded Spanx in Atlanta in 2000, and in June 2019 Kim Kardashian and Jens Grede co- founded Skims, which offered shapewear in a wider range of skin-tone shades and sizes.

A high-waist brief may rise as high but uses ordinary fabric. A seamless brief shares the bonded edges but not the compression. A full brief has the shape but none of the firmness. Pull the fabric: a control brief resists.

Shapewear sizing is where most control briefs go wrong. People buy a size down for extra hold and end up with a brief that rolls at the waist, cuts at the leg and pushes flesh into a ridge exactly where the dress was meant to look smooth. The right brief is chosen by control level and by the shapewear brand's own chart, not by guesswork.

Light, medium, firm and stronger

Control levels are labeled by the maker, and they are not standardized between brands. As a working rule:

• Light: smooths lines under jersey and knit dresses. Comfortable for a full workday.
• Medium: flattens the stomach a little under fitted skirts and trousers.
• Firm or strong: reshapes under bodycon, satin and sheath dresses. Most people keep this for occasions.

Some ranges go further. Skims sells shapewear in light, mid, strong and extra strong support, and labels its Seamless Sculpt line as strong compression. Spanx splits its briefs into families: the SPANXsupersmooth Undie-tectable briefs are the smoothing end, and the SPANXsculpt line, including the Seamless Power High-Waisted Brief, is the firmer end.

Start lighter than you think you need. A medium brief in the right size usually looks better than a firm one that is too small.

Sizing by the chart, not by habit

Measure your waist and hips with a soft tape and use the brand's chart. Shapewear sizes rarely match ordinary underwear sizes, and the chart takes account of how much the fabric is meant to compress. If you fall between sizes, the hip measurement usually matters more in a brief, because that is where the leg edges sit.

Signs the brief is too small:

1. A roll of flesh above the waistband or at the leg edge.
2. The waistband folds down when you sit.
3. Deep red marks that are still there an hour after you take it off.
4. You cannot sit, bend or breathe deeply without it pinching.

Signs it is too big are rarer but simple: wrinkles over the stomach and a waistband that slides when you walk.

Rise and leg edge

Rise decides where the brief ends, and the end is where a line can show. A mid-rise brief can leave a ridge across the stomach under a fitted dress; a high-waist brief cut to just under the bust avoids it but is harder to get on and off. Silicone strips inside the waistband stop high styles rolling down.

At the leg, bonded or laser-cut edges lie flatter than elastic. Under a short or very fitted skirt, the leg edge of a brief can show as a line across the upper thigh. Thigh-length shaping shorts move that line lower, out of sight, and stop thighs rubbing in summer.

Under which clothes

Control briefs earn their place under single-layer fabrics that cling: jersey dresses, satin slip skirts, crepe sheath dresses and fitted tailored trousers. Under full skirts, A-line dresses and loose trousers, they do very little that an ordinary full brief would not.

Color matters more than people expect. Choose a nude shade close to your own skin for pale or white clothes rather than white shapewear, which shows through. Black works under black and dark colors only.

Making elastane last

Compression comes from elastane, and heat destroys it. Wash control briefs in cool water on a gentle cycle, or by hand, and never tumble dry. Skip fabric softener, which coats fibers and can weaken grip strips. If you wear them often, rotate two briefs so neither takes every wash. Once the brief stretches more easily than it did new, it no longer controls anything; that is the time to replace it, not when it starts to look worn.