Before we dive into the bustline, you need to know your band size. Grab a soft measuring tape (or a piece of string and a ruler) and wrap it snugly around your ribcage, just under your breasts. Make sure the tape is level and tight enough that it doesn’t sag, but not so tight it cuts off your yoga vibes.
Take that number and round it to the nearest even inch. If you measure 32.5 inches, call it 32. If you’re at 33, bump it up to 34. This is your band size—the foundation of the whole operation. Remember, 80% of the support comes from the band, not the straps. Those straps are just decorative seatbelts.
A fun fact: the modern bra was patented in 1914 by Mary Phelps Jacob, who sewed two handkerchiefs and a ribbon together. She sold the patent for $1,500. Today, the global lingerie market is worth over $80 billion. You’re honoring a century of innovation—and you’re doing it in your sweatpants.
How to Measure Your Bust (No, Seriously, It’s Easy)
Now for the part that makes people anxious: the bust measurement. Stand up straight, breathe normally (don’t puff out your chest like a peacock), and wrap the tape around the fullest part of your bust. The tape should be loose—just draping over your nipples like a light hug. Write that number down.
Here comes the math, and I promise it’s easier than splitting a dinner bill. Subtract your band size from your bust measurement. Every inch of difference equals one cup size: 1 inch = A, 2 inches = B, 3 inches = C, 4 inches = D, 5 inches = DD or E, and so forth. For example, if your band is 34 and your bust is 37, you’re a 34C. Congratulations—you just solved the lingerie equation.
If you’re between cup sizes, round up. A slightly bigger cup is always better than a tight one. A too-small cup can cause tissue migration (yes, that’s a real thing) and back pain. Think of your breasts as guests at a dinner party—they want room to breathe, not a chokehold.
