I’m going to be 100% honest with you. I never wear regular bras with cups. I stick to sports bras. Why? You might ask. Simply put: they never fit my body correctly. Look, I can’t even blame a specific brand because the truth is… I have NO idea how to measure myself to even buy the correct size (gotta love “oh this looks big enough” shopping). 

As of Summer 2023, that stops. 

I had to call my best connect for all things fashion-fitting advice and for once, it’s not my mother. Friend, I got the tips and tricks to finding the perfect fit-like-a-glove bra from none other than Jennifer Johnson – Design Director at POPFLEX

Signs of a Poor Fitting Bra


I told you I’m going to be 100% honest with you… if you look like the image above when you slip into your bra… it’s not fitting you properly. 


I know I know. When Jennifer ever-so-politely dropped knowledge on signs of a poor fitting bra, I sat there jotting down notes but not for you… for ME. With my right boob popping out of the top of my bra and my bra band halfway up my back begging for me to take it off, I felt so… seen. BUT this is the beauty of fashion education. You (cry a little) live and learn. 

Here’s what to look out for:

  • Boob spillage 
  • Wrinkly cups
  • The bottom band should be leveled, which can be done by tightening or loosening the straps
  • The back band should not be super high and should rest comfortably on your mid-back 
  • You should not be able to stick more than 1 finger under the bottom band. If you can, this means it’s too loose
  • Bra straps sliding off (you want a secure fit)  

How to Measure Your Bra Size

We have to learn at some point. Let’s get into it. 

Step 1: Grab a soft measuring tape. 

And I know you better not go into your closet and get that super hard measuring tape from the hardware store. Emphasis on soft, friend. A soft measuring tape (or tailor’s tape) is designed to be super flexible so you can loop it around your body easily and THAT is juuuust what you need. 

 ”Stand in front of a mirror while measuring so that you can ensure that the measuring tape is level. If it’s too high or too low, you’re not going to get an accurate read.  Let it be snug.” - Jennifer.


Step 2: Discover your band size.

how to measure your band size bra blogilates

For this step, you need your boobs to be relaxed and not pushed up in any way so you have 2 options: go braless or, make sure you’re wearing a non-push-up/non-supportive bra. 

Part 1: Wrap the measuring tape around your torso and place it directly under your bust (directly underneath your boobs).

Remember what Jennifer said: the tape should be level and snug (not tight).

Part 2: Got your number? Perfect. Now… this part is important:

Is the number even? If so, add 4 inches to your measurement. 

Is the number odd? If so, add 5 inches to your measurement. 

For example, my measurement read 39.” 

39 + 5 = 44

My band size is 44. 


Step 3: Discover your bust measurement

how to measure your bra size measure bust blogilates


Part 1: Wrap the measuring tape around your back, under your arms, and around the fullest part of your chest.

Remember: level and snug (not tight).

Part 2: Got your measurement? Beautiful. Now round to the nearest whole number. 


Step 4: Find your cup size

how to measure bra cup size blogilates

Bust size - Band size = Bra Size 

I was never good at math so, I’ll keep this simple for you. 

Part 1: Subtract your measurement from Step 1 (band size) from your measurement from Step 2 (bust size). 

Part 2: Take your answer, and refer to the size chart above to calculate your cup size. 

Ok, I’ll go first. My bust size is 46 and my band size 44. Let’s do this. 

46-44 = 2 inches 

This means my cup size is a B. I am a 44B. 

Friend… we did it. We found our bra size!!!

Myth Bust-ers

Let’s be real: there is NOTHINGGGGG more frustrating than finding something super cute like to the point where you’re literally itching to add it to your cart just to find out… it’s sold out in your size. 

True or false: Sister sizing exists with bras (aka your boobs can fit into different cup sizes).


“You actually can size up or down depending on what is comfortable for you and what works best for your body.” - Jennifer

When Jennifer told me this, I was sooo happy. A rule of thumb is to move up or down by 1 band or cup size depending on the brand. 

“Every brand has their own "fit" it can be really trial and error for you to find what works best for you.” - Jennifer 

So basically, If I’m doing what I do best (cough, shopping) and a specific bra isn’t comfortable on my body because of the cut and I grabbed my normal size (44B), my next move would be to try a 46A for more room or, a 42C for less room. 

Ok bra knowledge!!! 

Knowledge is Power

The edu is poking through, no pun intended. I don’t know about you guys but there’s something so empowering about knowing how to shop for YOUR body. 

Personally, being plus size, there is a certain amount of trauma that follows me through the mall:

Will my size be available?

Is there even anything cute in my size? Nope, the store doesn’t carry it. 

YES! The button is clasped….but can I sit and function in this? 

Don’t get me wrong, it’s great to have certain tried-and-true products under my belt that I can be truly comfortable in and also FEEL good in. But as they say, knowledge is power – knowing my body and what works for MY specific lumps, bumps, and curves is so so important when trying to reclaim that traumatic story. That’s something I not only want to experience, but I want for you too. You deserve it ❤️

Alright, now that I finally know bra size, guys I need recs. What’s your favorite comfy bra?



— Noor

Thank you Cassey! You bring so much creativity and your energy is just stunning! I love how thoughtful you are of your customers and I love to see you so passionate. You are amazing!!🫶🏻💕


— Sara Gomes
Recently, I became seriously ill by a neurological illness and gained a lot of weight. I no longer have clothes that fit me and no money to buy them. This giveway is a great opportunity.


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I just had a baby it would be great to finally have clothes that fits me ❤️

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What a wonderful competition to giveaway each month! I absolutely love your range & hope to be a lucky winner! Thank you for being so great & listening to your customers it’s such a rare thing for a designer to do these days! Wishing you every success!

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— Polly


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