Wearing the wrong bra size is more common than you might think—and it can lead to discomfort, poor support, and a less flattering fit. Whether you’re shopping for the best bras for small boobs or trying to find the right bra for saggy breast, everything starts with an accurate measurement. The good news? You can easily measure your bra size at home with just a measuring tape and a few simple steps.
Here’s how to get the perfect fit from the comfort of your own space.
Easy Steps to Accurately Measure Your Bra Size
Finding your true bra size isn’t complicated, but it does require accurate measurements. Here’s how to get started:
1. Measure Your Band Size
Stand in front of a mirror wearing a non-padded bra or no bra at all. Wrap a soft measuring tape snugly around your ribcage, directly under your bust. Make sure it’s level all the way around. Round to the nearest whole number—this is your band size.
2. Measure Your Bust Size
Next, measure around the fullest part of your bust, keeping the tape relaxed but not loose. Again, ensure the tape is level and straight across your back. Round to the nearest whole number.
3. Calculate Your Cup Size
Subtract your band measurement from your bust measurement. Each inch of difference corresponds to a cup size: 1 inch = A cup, 2 inches = B cup, and so on.
Still not sure? ThirdLove has a comprehensive guide on how to measure bra size with visuals and pro tips to help you get it right the first time.
Common Bra Sizing Mistakes and How to Avoid Them
Even with good measurements, it’s easy to make a few missteps when determining your ideal bra size. Here are some of the most common mistakes—and how to avoid them:
- Guessing Your Size Based on Clothing
Your bra size doesn’t necessarily match your shirt size. Taking actual measurements is the only way to find your correct size. - Ignoring Band Fit
Most of the support in a bra comes from the band, not the straps. If your band is riding up or feels too tight, you might need to adjust your band size—not just your cup. - Wearing the Same Size Across Brands
Different brands and styles may fit differently. Always check the brand’s size chart and be open to trying a new size if the fit feels off.
Whether you need the best bras for small boobs or a supportive bra for saggy breast, getting the sizing right is the first—and most important—step.
Taking a few minutes to measure accurately at home can lead to a much more comfortable, supportive, and flattering fit. With ThirdLove’s inclusive sizing and expert resources, finding your perfect bra has never been easier.
