For your boobs.

Finding the right bra can be hard, but we’re here to help make it easier. Let us get to know you and your boobs a little better. We’ll find you something you’ll never want to take off.

Are you confident you already know your bra size?

I am.No, Help!
I am.No, Help!
 
 

Bra Fit Guide

Try on your favorite underwire bra now, then use the below as your guide.

Step 1: The Band

Your bra’s band provides most of its support (not the straps). Most women are wearing a band that’s too loose.

Your band should lay straight around your body, beneath your shoulder blades. If you’re able to pull your band more than two inches away from your back on the tightest hook, or if the band slides up your back, try a smaller band size.

Step 2: The Cup

Cups that are too big are pretty easy to spot. They wrinkle and gape. Cups that are too small are more common and trickier to recognize. A properly fitting cup holds all of your breast tissue without cutting into you.

If you feel like you’re in between cups, adjusting your straps can help. If you sized down in your band, you’ll need to go up a cup size to stay in the range you’re wearing now. This is called “sister sizing.” For example: a 34D and a 32E are sister sizes.

Step 3: The Wire

A properly fitting underwire bra offers shaping and support that a wireless bra cannot. But an ill-fitting wire can be really uncomfortable. If your wire digs into your side under your armpit, consider a larger cup size. If it digs into your chest, try a larger band size.

Step 4: The Straps

Your straps should be snug against your shoulders and stay in place as you move throughout your day. They should never dig in or feel uncomfortable.

If your straps are digging in, there’s a good chance your band is too big — consider trying a smaller band. If your straps are slipping off your shoulders, try adjusting them for tightness. One side may need more adjustments than the other (your boobs are sisters, not twins).

Not every bra style is perfectly suited to every body type, so it’s about finding the bra that works best for you. If your first CUUP bra doesn’t feel quite right, you can try another size or silhouette. Free returns and exchanges on all bras.

Watch our fit video

Find My CUUP Size

Based on my most recent fitting or the best fitting bra in my drawer:

I am a CUUP size:

Note that our bras are unlined and unpadded. If you prefer a more tailored fit, you may want to try one cup size larger and one band size smaller than what you’re already wearing — especially if your current go-to is padded. If you need help, you can chat with our Fit Therapists or schedule a virtual fitting.

We’re sorry to say we don’t have your size — yet. But we’re constantly working on expanding our range, and would love to hear your feedback. Email us to tell us what size you’d like to see next.

Don't recognize your size? See our conversion chart

Size Conversion

Cup

CUUP US UK Europe France Italy Australia Japan
AA AA AA AA AA AA A
A A A A A A A B
B B B B B B B C
C C C C C C C D
D D D D D D D E
E DD or E DD E E E DD or E F
F DDD or F E F F F DDD or F G
G DDDD or G F G G G DDDD or G H

Band

US UK Europe France Italy Australia Japan
28 28 60 75 0 6 60
30 30 65 80 0 8 66
32 32 70 85 1 10 70
34 34 75 90 2 12 75
36 36 80 95 3 14 80
38 38 85 100 4 16 85
40 40 90 105 5 18 90
42 42 95 110 6 20 95

Let us support you

Chat with our Fit Therapist online or schedule a fitting.

Book my Fitting