How to Measure a Teenager’s Bra Size

When it comes to measuring a teenager’s bra size, the process is simple. First, measure around the ribcage just below the bust to determine the band size, then measure around the fullest part of the bust to find the cup size. 

Subtracting the band size from the bust measurement helps determine the cup letter; each inch of difference represents a cup size (e.g., a two-inch difference is a B cup). This method ensures a comfortable and supportive fit as your daughter transitions into wearing bras.

When shopping for a tween training bra or a teen’s first real bra, comfort is key. Because preteens and early teens are still developing, traditional bras with structured cups may not provide the right fit, leading to gaps or discomfort. Instead, soft, flexible training bras are an ideal starting point, allowing her to get used to wearing a bra without feeling restricted.

This bra sizing guide for teens will help you measure at home with ease, ensuring your daughter finds a bra that fits well and makes her feel confident. Whether she’s trying a training bra for the first time or looking for more support as she grows, understanding proper sizing will make the process smoother for both of you.

Differences Between Training Bras and Sports Bras

When transitioning to wearing bras, it’s important for your daughter to understand what to wear and why she should wear it. There is no wrong way for her to approach her body’s changes, but having more information can make her feel comfortable and empowered.

Training Bras

Training bras are a great way for your tween to experiment with style and discover coverage preferences. Training bras are typically made of cotton and other comfortable material; they are lightweight and a great way to provide an introduction to coverage without compromising comfort.

Yellowberry offers a wide variety of “First Bras” that help your daughter feel stylish and mature, without discomfort or feeling pushed out of her element. Our training bras offer breathable material in an athleisure style, and our goal is to empower young women by removing the taboo of female development and providing excellent undergarments for movement and comfort.

Sports Bras

The difference between sports bras and training bras is that sports bras are engineered for performance. They have more layers of fabric to keep sweat off of your daughter’s chest and tend to run tighter due to their elasticity. This keeps her breasts close to her chest, which is more comfortable when engaging in high-intensity movement.

Final Thoughts

The changes your daughter’s body is undergoing are normal, and it’s normal for her to feel like it’s not normal at all–this is why offering her as much information as she needs is so important. Every body is different, so she needs to find what is right for her. You can help her find her bra size comfortably by measuring her yourself at home with just a tape measure and simple math. Knowledge is power, and once she knows her size, she can try on different training bras at the store or order options online.

Looking for more information on the average bra size for a teenager? We’ve got you covered–take a look at our latest post!