How to Determine Your Lingerie Size Without a Fitting

Quick Answer

You can determine your lingerie size at home with a soft measuring tape, a mirror, and a few minutes. Measure your underbust and bust for bras, and your waist and hips for underwear, then compare to a size chart. For the most accurate results, measure yourself while wearing a non-padded bra and no underwear.

Sizing can feel like a guessing game, especially when you're shopping online and can't try things on. But you don't need a professional fitter to find lingerie that fits well and feels great. With a few simple measurements and a reliable size chart, you can confidently choose your size from home.

This guide walks you through measuring for both bras and underwear, explains how to read size charts, and offers practical tips to avoid common mistakes. Whether you're buying a bralette or a thong, knowing your measurements is the first step to a comfortable, flattering fit.

Measuring for Bras

To find your bra size, you'll need two measurements: your underbust and your bust. Wrap a soft measuring tape snugly around your ribcage, just under your bust, and note the number in inches. This is your band size. Then, measure around the fullest part of your bust, keeping the tape parallel to the floor. This is your bust measurement.

The difference between these two numbers determines your cup size: each inch of difference equals one cup size (1 inch = A, 2 inches = B, and so on). For example, if your underbust is 32 inches and your bust is 35 inches, you're a 32C. Keep in mind that cup sizes can vary between brands, so always check the specific brand's size chart.

• Measure while wearing a non-padded bra to get the most accurate bust measurement.
• Keep the tape snug but not tight—you should be able to slip a finger underneath.

Measuring for Underwear

For underwear, you'll need your waist and hip measurements. Measure around your natural waist, which is the narrowest part of your torso, usually just above your belly button. Then measure around the fullest part of your hips and buttocks. These numbers will help you choose the right size according to the brand's size chart.

Most underwear size charts use letter sizes (XS, S, M, L) or numeric sizes (2, 4, 6). If you're between sizes, consider the style: high-rise cuts may need a larger size for comfort, while cheeky cuts might fit true to size. Always check the fabric—mesh and lace are more forgiving than non-stretch materials.

• Measure your waist and hips while standing straight with feet together.
• For high-waisted styles, prioritize your waist measurement; for cheeky cuts, prioritize your hips.

Using Size Charts and Calculators

Once you have your measurements, consult the brand's size chart. Most charts list band and cup sizes for bras, and waist/hip ranges for underwear. If a brand offers a bra size calculator, input your measurements to get a recommended size—but remember, calculators are a starting point, not a guarantee.

Size charts vary between brands, so don't assume your size from one brand will match another. For example, a size M in one line might correspond to a size L in another. Always check the specific product's size chart before ordering, and read customer reviews for insights on fit.

• Print or save the size chart for reference while shopping online.
• When in doubt, order two sizes if the brand offers free returns.

Step-by-Step Guide to Measuring at Home

1. Gather your tools: You'll need a soft, flexible measuring tape, a mirror, and a piece of paper to note your measurements. Wear a non-padded bra and no underwear for the most accurate results. Checkpoint: Ensure the tape is not twisted and lies flat against your skin.
2. Measure your underbust and bust: Wrap the tape around your ribcage, just under your bust, and record the number in inches. Then, measure around the fullest part of your bust. Subtract your band size from your bust measurement to find your cup size. Checkpoint: Keep the tape parallel to the floor and snug but not tight.
3. Measure your waist and hips: For underwear, measure your natural waist (narrowest part) and the fullest part of your hips. Write down both numbers. Checkpoint: Stand straight with feet together, and don't suck in your stomach.
4. Consult the size chart: Compare your measurements to the brand's size chart. For bras, find your band size and cup size; for underwear, find the size that corresponds to your waist and hip measurements. Checkpoint: If you're between sizes, consider the style's adjustability and fabric stretch.
5. Test with adjustable styles: When in doubt, choose styles with adjustable straps or waistbands. These allow you to fine-tune the fit even if your measurements are on the edge of a size range. Verdict: Adjustable features can save you from returns and make sizing more forgiving.

Products That Make Sizing Easier

• Camilla Easy Fit Bralette in Black Rose XS/S: Adjustable shoulder & band strap for an easy fit that's always adjustable — perfect if you're in between sizes. If your measurements fall between sizes, an adjustable bralette like this lets you customize the fit without needing a perfect size match.
• Wine Venus Ultra-Adjustable G-String XS/S: Adjustable waistband – with gold-toned hardware for a custom fit. An adjustable waistband on underwear helps accommodate slight variations in your waist measurement, ensuring a comfortable, secure fit.

Determining your lingerie size without a fitting is straightforward when you know your measurements and how to use a size chart. Take your time, measure accurately, and don't hesitate to use adjustable styles for extra flexibility. With these steps, you'll be ready to shop online with confidence and find pieces that fit beautifully.