How to Put On a Bra Correctly | Step-by-Step Fitting Technique

Most bra fit problems aren't about the bra itself — they're about how it's being put on. The right technique takes about 60 extra seconds and makes a real difference in how your bra fits, feels, and holds up over time.

Here's exactly how to do it.

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Step 1: Loosen the Straps First

Before you put your bra on, fully loosen both straps. This gives the bra more flexibility as you get it on and prevents the straps from pulling the band out of position. You'll adjust them at the end once everything else is sitting correctly.

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Step 2: Clasp the Band

There are two ways to do this — pick whichever works best for your body and range of motion.

Option 1: Clasp Behind Your Back (recommended) Slip your arms through the straps like a vest, reach behind you, and clasp on the loosest hook. Always start on the loosest hook — it gives the band room to stretch gradually over time, which extends the life of your bra significantly.

Option 2: Rotate and Slip On (if reaching behind isn't comfortable) Wrap the band around your torso with the cups facing your back, clasp on the loosest hook, then gently rotate the bra so the cups come to the front and slip your arms through the straps. Note: this method can stretch the band out faster, so rotate slowly and gently.

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Step 3: Scoop and Swoop

This is the step most people skip — and it's the most important one. Once your bra is on, you need to make sure all of your breast tissue is actually inside the cups.

• Lean forward about 45 degrees
• For each side: swoop breast tissue inward toward the center, then scoop it up into the cup
• Run a finger along the bottom edge of the cup — you should feel ribcage, not breast tissue
• Check the outer edges near your armpits — if you feel tissue escaping outside the cup, re-swoop to guide it back in

Skipping this step is the most common cause of spillage, gapping, and underwires sitting on breast tissue instead of your ribcage. Even if your size is perfect, the fit won't feel right if your tissue isn't properly in the cup.

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Step 4: Adjust the Straps

Once your band and cups are in place, fine-tune your straps so they feel snug without digging in. Two easy ways to check:

The finger test: Slide one finger under your strap and run it from the top of the cup, over your shoulder, to the back. You should fit exactly one finger — no more, no less.

The lift test: Lift your strap straight up above your shoulder. It should move about one inch before feeling snug. If it moves more than that, tighten it slightly.

One important note: shoulders are often asymmetrical, so it's completely normal to adjust each strap to a different length. Fit each side independently for the best result.

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A Note on Asymmetry

If your breasts are different sizes — which is extremely common — fit the cup to your larger breast first. Then tighten the strap on the smaller side to bring that cup closer to your body.

And remember: your band provides most of your support, not your straps. Straps are there to keep the cups in place and make small adjustments. If your straps are doing most of the work, your band is probably too loose.

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Still Feel Like Something's Off?

If you've followed every step and your bra still doesn't feel right, the size is likely the issue. 

Radical makes everyday bras in 92+ sizes, including sizes most brands don't carry. Find your fit here.