How to Choose the Right Size When Buying Lingerie Online

You found it. The lace set that makes your heart skip. The bodysuit that looks like it was designed just for you. You add it to your cart, choose a size, and wait by the letterbox like it's Christmas.

Then it arrives — and it doesn't fit.

It's one of the most frustrating things about shopping for lingerie online, and it happens to almost everyone at some point. The good news? It's almost entirely avoidable. With the right measurements and a few insider tips, you can shop lingerie online with the same confidence you'd have standing in a fitting room.

Here's everything you need to know.

Why Lingerie Sizing Is More Complicated Than Clothing Sizing

Your dress size and your lingerie size are not the same thing — and that's where a lot of shoppers get tripped up.

Regular clothing often has room to breathe, stretch, or be layered. Lingerie is designed to sit close to the body, which means the fit is everything. A centimetre too tight across the bust can make a bra set uncomfortable within minutes. A size too large on a bodysuit loses the silhouette entirely.

Add to this the fact that sizing varies between brands, styles, and even fabrics — and it becomes clear that your "usual size" is only a starting point, not a guarantee.

The solution? Start with a tape measure, not a guess.

Read More: The Ultimate Guide to Women's Lingerie Sizes in Australia

Step 1: Take Your Measurements (Properly)

This is the single most important thing you can do before buying lingerie online. Three key measurements will cover almost everything in a lingerie collection:

Bust (cm) Measure around the fullest part of your chest — across your nipples — keeping the tape parallel to the floor. Don't pull the tape tight; it should sit snug without compressing.

Waist (cm) Measure around the narrowest part of your torso, typically just above your belly button. Stand naturally — no sucking in.

Hips (cm) Measure around the fullest part of your hips and bottom, usually about 20 cm below your waist.

Write these down. They're your lingerie passport, and you'll use them every time you shop.

Tip: Measure yourself in your underwear, not over clothing, and use a soft fabric tape measure for the most accurate result.

Step 2: Match Your Measurements to the Size Chart

Once you have your measurements, compare them to the brand's specific size chart — not a generic one you found elsewhere online.

At Lingerie Seduction, sizing is listed in Australian sizes (e.g., XS/S = AU 6–8, M = AU 10–12, L = AU 14, XL = AU 16). As a general guide:

Refer to the Lingerie Seduction Size Guide for the most current and complete reference.

When you land between two sizes, here's the rule: go up if comfort matters, go down if fit and silhouette are the priority. For most lingerie styles, sizing up is the safer call — it's much easier to feel good in a slightly relaxed fit than to struggle all evening in something too snug.

Step 3: Factor in the Style You're Buying

Not all lingerie styles fit the same way, even in the same size. Here's how to think about sizing across Lingerie Seduction's key categories:

Bra Sets & Lingerie Sets

These require the most precision. Your bust measurement is the most important factor here. Keep in mind that most lingerie sets at Lingerie Seduction are designed to fit a B to D cup range — if you're outside that range, reach out to the team directly for personalised advice before purchasing.

Bodysuits & Teddies

Bodysuits are one-piece garments, so all three measurements matter — bust, waist, and hips. If your measurements span two different sizes across these three points, size up. A bodysuit that's too tight across the hips will be uncomfortable regardless of how perfect the top half feels.

Babydolls & Chemises

These styles are naturally forgiving thanks to their relaxed, flowing silhouette. Sizing is primarily driven by your bust. Most women find their standard size works well, though those with a fuller bust may prefer to size up for comfort.

Corsets & Bustiers

Corsets are structured and designed to be snug — that's part of their appeal. Your underbust and waist measurements are the most critical here. Take your waist measurement carefully, and if you're between sizes, consider how tightly you want the corset to sit. Some women prefer a closer fit for a more sculpted look; others prefer a touch of breathing room.

Plus Size Lingerie

Lingerie Seduction's plus-size collection is designed specifically for AU sizes 14 and above. The same measurement principles apply — bust, waist, and hips — and the team is always available for styling advice if you're navigating fit for the first time.

Step 4: Consider the Fabric

Fabric has a bigger impact on fit than most people realise.

Stretch fabrics (like mesh, stretch lace, and jersey knit) tend to be more forgiving across a size range. If you're in between sizes, these styles will usually accommodate either.

Structured fabrics (like satin, non-stretch lace, faux leather, or boned corset materials) have very little give. Sizing accuracy is more important here — trust your measurements rather than your instincts.

When in doubt, check the product description for fabric details or contact the Lingerie Seduction team. They're there to help you get the right fit, not just make a sale.

Step 5: Read the Product Notes

Every product listing on Lingerie Seduction includes details that go beyond just the size. Before you add to the cart, look for:

• Model sizing information — if the model is listed as wearing a size M at 170 cm, that gives you a real-world reference point

• Fit notes — phrases like "runs small" or "true to size" are useful signals

• Adjustable features — many pieces include adjustable straps, hook-and-eye back closures, or tie fastenings that add flexibility to the fit.

These details are there to help you shop smarter.

What to Do If You're Still Not Sure

You don't have to guess. Lingerie Seduction's customer support team is genuinely helpful — not in a scripted way, but in a "we'll talk through your measurements, your body type, and what you're hoping to wear it for" kind of way.

Reach out via the site's chat function or email support@lingerieseduction.com.au before you order. It's the kind of personal service that's rare in online retail, and it means you're far more likely to receive something you love rather than something you'll return.

And if a piece doesn't work out? Lingerie Seduction offers a 30-day return policy — giving you genuine peace of mind when trying something new.

A Quick Checklist Before You Buy

Before clicking "Add to Cart" on your next lingerie purchase, run through this:

• I've measured my bust, waist, and hips in the last few months

• I've checked the brand's specific size chart (not a generic one)

• I've considered the style and how it will fit across my measurements

• I've noted the fabric type and whether it has stretch

• If I'm between sizes, I've decided whether to size up or down based on the style

• I've read the product listing for any fit notes or model measurements

Tick all of those, and you're shopping like someone who rarely returns things.

The Right Fit Changes Everything

A well-fitting piece of lingerie doesn't just look better — it feels different. The confidence that comes from wearing something that actually fits, that sits where it's meant to sit and flatters the way it was designed to, is hard to describe until you experience it.

That's what Lingerie Seduction is built around — helping Australian women find pieces that make them feel exactly that way.

Ready to find yours? Browse the full collection, keep your measurements handy, and don't hesitate to ask for help. The perfect fit is closer than you think.

Shop the Lingerie Seduction Collection →

View the Full Size Guide →