How to Choose Breast Forms Based on Your Chest Development

Making the decision to purchase breast forms is often a big step for beginning crossdressers. For trans women and non-binary persons, it can be a very affirming experience! Breast forms can help inspire gender euphoria when you look in the mirror and see the right silhouette looking back at you.

Breast forms come in many different shapes, including teardrop and triangle, which often seems like this would be very important in selecting your size. Believe it or not, this is actually secondary to getting the perfect fit! Although shape can play a factor in how to create your desired look, what is most important is your body type.

Why does body type matter?

Breast forms are designed for different chest types. Someone who has naturally developed breast tissue or pec muscle has a different silhouette than someone who is very flat in their chest, and this changes how a breast form fits on the body!

When buying breast forms, it’s very important to choose the right style of breast form concavity. This helps the breast form sit as close to your skin as possible so that you get the most sensation and realistic feeling and appearance. You want to make sure that the breast form is hugging your body!

What happens if a breast form doesn’t fit?

If a breast form is too flat in the back, the entire breast form will pull away from the body. Imagine putting a book on top of a basketball: that book will not mold around the basketball, but stay in its shape. It creates big gaps at the edges, making your breast forms look stuck on top. Worst of all, if you want to attach your breast forms, this often means that your breast forms won’t stay attached because you will be fighting against how they want to be.

If a breast form is too concave in the back, there will be an air bubble between you and the breast form. Picture putting a bowl on your chest or stomach: there’s a big empty spot with nothing inside. Although the shape may look right, it can be uncomfortable, or create an awkward sound if someone hugs you and the air tries to escape. It can also make the breast forms more likely to move out of place, even when attached!

How do I find out how much chest development I have?

There’s a very easy way to find out what style of breast forms will be best for you! Using a soft fabric tape measure, simply take a measurement going all the way around your body, beneath the curve of your pec muscle or breast tissue. This measurement is sometimes called your “underbust” measurement. Write this number down – you’ll need it in a moment!

The second measurement you’ll need will be taken by wrapping that same tape measurement all the way around your body again, but this time through the fullest part of your chest development – usually at your nipples. Write down this measurement, too! This measurement is usually referred to as your “bust” measurement.

You don’t need to worry about taking either measurements with a deep breath or anything like that; just standing comfortably will be enough to get an accurate understanding of the best style of breast forms for your body. After all, you want to be comfortable when you wear your breast forms!

Here’s how to do the math to figure out how much chest development you have: Simply deduct the underbust measurement from your bust measurement!

If your bust measurement is the same or only up to 1 inch larger than your underbust measurement, you are best with a breast form that is very flat in the back, like Gold Seal Classic 1 breast forms.

If your bust measurement is 1-2 inches larger than your underbust measurement, you are best with a breast form that is somewhat concave in the back, like the Gold Seal Classic 1 ½ breast forms.

If your bust measurement is 2 inches or more larger than your underbust measurement, you need a concave breast form! Your best bet is a style like the Gold Seal Classic 2 breast forms.

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