A Complete Guide to Understanding Your Underwear Size [Women]

Renata Black, EBY Co-Founder & CEO

As with women’s clothing, women’s underwear sizing is not universal across brands, so finding the perfect fit can be difficult.

Underwear that doesn’t fit properly can cause lots of issues; plus, it’s just downright uncomfortable. If it’s too tight, it can be painful and if it’s too loose, it can fall down or move around. Well-fitting underwear is essential to comfort and how you feel in your clothes!

In this guide, we’ll be discussing how to work out what size underwear you need, no matter the brand. For some great tips for finding well-fitting underwear, keep reading!

In This Article

6 Signs Your Underwear is The Wrong Size Finding Women’s Panty Sizes That Fit You
Using The Women’s Underwear Size Chart Underwear Style Considerations
4 Signs Your Underwear Fits Properly

6 Signs Your Underwear Is The Wrong Size

Before we dive into the particulars of working out your underwear size though, you need to know how to tell when your underwear isn’t fitting right.

Ill-fitting underwear can cause many problems, including discomfort, pain, and visible lines in your clothing. So, knowing when your underwear isn’t fitting right is a great way to find the correct underwear size for you.

Your Underwear is Too Tight and/or Causing Bulges

If your underwear is causing your skin to bulge over the top, particularly where your hips and love handles are concerned, the waistband may be too tight on you.

In addition, if you’ve got a visible panty line that’s giving you ‘two bums’ vibes, then the leg holes of your underwear are too tight.

Your Underwear Has No Back Support

If your underwear is gaping at the back giving absolutely no support, you know your underwear is too big.

Your Underwear Has Bunching Fabric

This one probably seems obvious, but if there is excess fabric bunching between your legs, gaping at your waist, or at your side, then you’ve got the wrong size on; these underwear are too big for you!

Your Underwear is Giving You Wedgies

Underwear shouldn’t give you a wedgie! Even thongs, contrary to some of their cruder nicknames, shouldn’t feel uncomfortable. If your underwear is riding up your butt cheeks, or rubbing on your bum the wrong way, it’s time to reassess your underwear size.

Your Underwear Waistband Rides Up

If your underwear is riding up or down, then you are probably wearing the wrong size. Not only does a riding waistband cause discomfort, it can end up visible above your clothing as well. If you keep accidentally showing off your underwear waistband, it may be time to change the size of your underwear.

Your Underwear is Giving You Rashes and/or Panties Are Digging Into Your Skin

There are a few reasons your underwear could be giving you rash. It may be your detergent that is irritating your skin, or perhaps the style/fabric of your underwear is rubbing your skin wrong, but if neither of those are the case, there is a chance it may be that your underwear is too small and is rubbing against your skin. No matter the reasoning, it might be time to move on from those particular panties.

Likewise, if your underwear is digging in, leaving marks, and causing discomfort, it is time to consider other underwear sizes or styles.

Finding Women’s Panty Sizes That Fit You

To find the perfect panty size, there are a few body measurements you’re going to need to know. Sizes differ across brands, so knowing your measurements can help you to choose the correct size, no matter the brand.

Grab your measuring tape and follow our instructions below to ensure you’re getting the correct measurement for hip and waist size.

Measure Your Waist

To find your natural waist, you should bend at the sides and note where your body indents. Wrap a  tape measure around your waist so it’s snug, but not tight, and take the measurement.

Measure Your Hips

To measure hip size, you’re looking for the fullest part of your hips. Take this measurement using a tape measure. Make sure it’s snug but not too tight

Using The Women’s Underwear Size Chart

An underwear size chart should be available no matter the brand you’re looking at. This means you should be able to find what size of women’s underwear you need at any brand you shop.

Make sure you have your measurements close by so that you can match them to the women’s underwear sizes on the underwear size chart.

Panty Size Guide - Underwear Size Chart - EBY

When taking your measurements, you may write them in centimeters or inches. Be prepared to have to convert the measurements depending on the brand!

Underwear Style Considerations

There are a variety of underwear styles for women, and different styles sit differently on the body. This means that there may be differences in which size you choose depending on the underwear style.

How Should Hipsters Fit?

Hipster briefs should sit on the hips and provide full coverage of the bum and hips. They can be made in a range of fabrics, including sturdy and comfortable cotton, and delicate and dainty lace.

As a great choice for low-rise clothing, it is essential that hipster briefs fit and do not ride up. Choosing the right hipster brief means finding the right balance between tight enough to stay in place and not too tight that they create bulges.

How Should Bikini Style Fit?

Bikini style underwear also usually come in low-rise styles, meaning they sit between your waist measurement and your hip measurement.

They provide less coverage across the bum, meaning you need to be aware of the size of the leg openings too, ensuring they’re not cutting into your butt and ruining the line of your trousers!

How Should Thongs Fit?

Thongs are a go-to for those wanting to avoid the visible panty line, indeed, the EBY thong panties are made from our signature seamless fabric, creating smooth lines everywhere!

Thongs shouldn’t give you a wedgie, if they do, you need to size up. Your thong should sit well against your body, and whether low-rise or high-rise, should not dig into your body.

If you’re opting for a G-string, ensure you’re not cutting off circulation with the strings over your hips!

How Should Briefs Fit?

A great style for everyday wear, your brief style panties should fit well and not dig in, or bunch up. Briefs offer almost full coverage, making them a modest design, but also a style prone to the visible panty line.

With EBY brief panties you can protect against the visible panty line as they’re made with our seamless fabric. The perfect pair for everyday wear, check out our underwear size chart and find the perfect size for you!

How Should Cheekies Fit?

An elegant and sexy style, the cheeky style panty offers side coverage but much less butt coverage than brief style panties.

This style usually comes in a mid-rise style, meaning it sits on top of your hip. This is a good style to wear under slim-fitting styles as the lack of bum coverage protects against the visible panty line. The EBY cheeky underwear is perfect for smooth lines, having been made with our signature seamless fabric.

How Should Boyshorts Fit?

Boyshorts are great for a cozy fit. Providing full coverage of the butt, hips, and upper thighs, they’re great to wear under dresses and skirts, especially on windy days.

This style is great for avoiding a panty line though care should be taken to ensure they’re not too tight! Boyshorts can be slightly too snug if they feel tight, and this means that moisture can build up and cause irritation.

4 Signs Your Underwear Fits Properly

We’ve talked a lot about ill-fitting underwear in this blog post, so now we’re going to discuss what it should feel like when your underwear fits properly!

How Should the Waistband of Your Underwear Fit?

The waistband of your underwear should sit nicely against your skin. It shouldn’t roll, bunch, or dig in. If it does, you may need to retake your waist/hip measurements!

How Should the Buttox of Your Underwear Fit?

Butt coverage changes per panty style so a good rule-of-thumb is to ensure that the butt seam doesn’t ride up and that it covers each cheek evenly. If the butt seam is digging in, choose a size up to avoid the ‘two bums’ look.

How Should the Crotch of Your Underwear Fit?

The crotch part of your underwear should lie flat against your skin. There should be no bunching and it should feel secure but not tight.

How Should the Leg Openings of Your Underwear Fit?

Leg openings shouldn’t cause any indentations and should sit comfortably.


Finding the right underwear size seems like a mammoth task when different brands use different sizing, but knowing how your underwear should feel can help you choose the correct size. In addition, knowing your measurements can help you to make the right decisions no matter the underwear brand.

Don’t forget to join EBY and receive the best seamless panties every 3 months directly to your door. Or feel free to shop a la carte; when you add a minimum quantity of $50 to your cart you’ll receive free ground shipping. Learn more about EBY and get started on our FAQ page.

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