How to Choose the Right Lingerie Size for Your Body Type

Quick answer

Measure your underbust and full bust while braless, then compare those numbers to each product's chart instead of assuming your usual dress size. Fit comes down to three checks: band tension, cup coverage, and how the straps and gusset sit when you move. If a piece runs between sizes, size up in structured styles and stay true to size in stretch lace.

Most lingerie returns happen for one reason: the size was guessed, not measured. A bra size fitting takes about five minutes at home, and it saves you the disappointment of a set that digs, gaps, or rides up.

This guide walks through the exact order to follow, from measuring your body to reading a size chart to testing the fit before you commit. You will also learn how body type changes the cut you should choose, not the size you wear.

Start with two measurements, not your dress size

Wear an unlined bra or nothing at all, stand relaxed, and wrap a soft tape measure around your ribcage directly under your bust. Keep the tape level and snug, then exhale normally before you read the number. That is your underbust measurement, and it sets your band size.

Next, measure around the fullest part of your bust, usually across the nipple line, keeping the tape parallel to the floor. The difference between your bust and underbust measurements tells you the cup range you should look for. Write both numbers down before you open any size chart.

• Common mistake: measuring over a padded bra, which inflates the bust number and pushes you into a cup that gaps.
• Checkpoint: if your underbust measurement lands on an odd number, round down for a snugger band or up for more breathing room.

Read the size chart for the specific product

Lingerie sizing is not standardized across brands or even across collections. A medium in one bodysuit can fit like a small in another, so always open the chart attached to the exact item you are considering rather than relying on a general conversion table.

Match your measurements to the chart's bust, waist, and hip columns, then check the available option types. Some pieces are sold by clothing size, while others list only a size option, and that difference affects how much stretch the garment has built in.

• Common mistake: choosing a size based on the model's height or build instead of your own measurements.
• Checkpoint: if two of your three measurements fall in different sizes, follow the bust for structured tops and the hip for high-waisted bottoms.

Match the cut to your body type

Body type does not change your size, but it changes which silhouette flatters you most. If you have a fuller bust and a narrower hip, look for sets with adjustable straps and a supportive band. If your hips are wider than your bust, high-waisted bottoms balance the line and stay put without digging.

For a straighter frame, ruffles, lace overlays, and belts add shape. For a curvier frame, structured cups and wide bands distribute tension better than thin spaghetti straps. The goal is a piece that follows your shape instead of fighting it.

• Common mistake: buying a style you love in the wrong cut and blaming your body instead of the fit.
• Checkpoint: if you have to tug the band down or pull the cups up more than once, the cut is wrong, not the size.

Test the fit before you commit

Put the piece on, then move: reach overhead, sit down, and twist gently. The band should stay level in the back, the cups should lie flat against your chest without gaping, and the gusset should sit comfortably against your body. Any rolling, pinching, or riding up means you need a different size or cut.

Check adjustable elements last. Straps should be tightened enough to stay in place but loose enough to slide a finger underneath. If a piece has no adjustability, its fit depends entirely on choosing the right size from the chart.

• Common mistake: keeping a set because it looks good in the mirror while ignoring how it feels after five minutes of movement.
• Checkpoint: if you are between sizes and the piece has no stretch, size up; a slightly relaxed fit is easier to wear than a tight one.

Know when to size up or down

Stretch lace and mesh forgive a half-size difference, so stay true to your chart size in those fabrics. Structured satin, velvet, and boned tops have less give, so size up if your measurements sit at the top of a range. High-waisted bottoms should follow your hip measurement, not your waist, because they sit lower on the body.

If a piece is described as doubling as a top for a night out, treat it like outerwear: you want enough room to move and breathe, not a compression fit. For boudoir or special-occasion pieces, a closer fit is fine as long as nothing digs.

• Common mistake: sizing down in structured pieces because you want a tighter look, then finding the band or waistband uncomfortable.
• Checkpoint: when in doubt, check whether the product lists a size option or a clothing size, and follow the chart for that exact format.

Your five-step lingerie sizing routine

1. Measure underbust and full bust: Wear an unlined bra or nothing, keep the tape level, and write down both numbers. Checkpoint: remeasure if the tape slipped or you held your breath.
2. Open the chart for the exact product: Match your bust, waist, and hip measurements to that item's chart, not a generic conversion. Checkpoint: note whether the product uses clothing size or size options.
3. Choose a cut for your body type: Fuller bust: supportive band and adjustable straps. Wider hips: high-waisted bottoms. Straighter frame: lace overlays and belts. Checkpoint: the cut should follow your shape without tugging.
4. Do a movement test: Reach, sit, and twist. The band stays level, cups lie flat, and nothing rolls or digs. Checkpoint: if you have to adjust more than once, change the size or cut.
5. Decide between sizes: Stretch lace: stay true to size. Structured satin or velvet: size up. High-waisted: follow your hip measurement. Checkpoint: a relaxed fit is easier to wear than a tight one.

How real pieces from our catalog fit

• Black Lace Bodysuit: Part of our Classic Lingerie Set Collection, this black lace bodysuit is designed for a fun night out or a sexy night in and doubles as a top. Because it can be worn as outerwear, choose a size that lets you move and sit comfortably, not a compression fit.
• Red Orchid High Waisted Lingerie Set: The high-waisted bottoms sculpt and accentuate your curves with a flattering fit and cheeky coverage. High-waisted styles sit on your hip measurement, so check that number against the chart before choosing a size.
• Le Amour Lingerie Set: This French-inspired red one-piece lingerie set features a plunging neckline, a belt, garters, and gloves, with an open back and bow accent. A one-piece with a plunging neckline has less adjustability than a two-piece, so an accurate bust measurement matters more.
• Hot Black Satin Skirt Lingerie Set: This French-inspired set has a soft, supportive top that can be worn as a top and is comfortable enough to wear under a gown or daily attire. If you plan to wear the top as outerwear, prioritize comfort and movement over a tight fit.

A good fit starts with two honest measurements and the right chart, not with guessing your usual size. Measure once, check the specific product's chart, and test how the piece moves with you. When you get those three things right, lingerie stops being something you tolerate and becomes something you actually enjoy wearing.