Size Guide
Our size guide serve as a general guideline to sizing, and the measurements provided are to give you an approximate idea of what size you will be in FAITHFULL THE BRAND against your own measurements. Our silhouettes vary in size and fit, so each style will have different measurements. We provide sizing information in each product description, but if you have questions about a specific style’s measurements, you can always reach out to our Customer Care team if you have any questions. Please include your bust, waist, and hip measurements with any of your questions and we will help you out.
XS | S | M | L | XL | XXL | XXXL | |
AUS | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
USA | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
UK | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
XS | S | M | L | XL | XXL | XXXL | |
Bust | 32" | 34" | 36" | 38" | 40" | 42" | 44" |
Waist | 24" | 26" | 28" | 30" | 32" | 34" | 36" |
Hips | 34" | 36" | 38" | 40" | 42" | 44" | 45" |
Measurements are in inches
Need more help? Email us or head to our live chat.
How to measure
Bust
Place the tape measure under your arms, around your back and across the fullest part of your bust. Once you have the tape measure lined up, relax your arms at either side.
Waist
Measure around your natural waistline - this is usually the narrowest point on your waist (above your belly button and below your rib cage). Run the tape measure around your waist (like a belt), keeping it straight. Hips
Hips
Stand on a level surface with your feet together. Run the tape measure around the fullest part of your bottom and upper thighs, and not around your hip bones. Ensure the tape is straight around your body.

Bust
Place the tape measure under your arms, around your back and across the fullest part of your bust. Once you have the tape measure lined up, relax your arms at either side.
Waist
Measure around your natural waistline - this is usually the narrowest point on your waist (above your belly button and below your rib cage). Run the tape measure around your waist (like a belt), keeping it straight.
Hips
Stand on a level surface with your feet together. Run the tape measure around the fullest part of your bottom and upper thighs, and not around your hip bones. Ensure the tape is straight around your body.
Size | XS | S | M | L | XL | XXL | XXXL |
USA | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
CAN | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
EU | 34 | 36 | 38 | 40 | 42 | 44 | 46 |
UK/US | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
Bust | 81.6 | 86.0 | 90.8 | 95.9 | 101.0 | 106.0 |
Underbust | 66.4 | 70.5 | 75.6 | 80.6 | 85.1 | 89.9 |
Difference | 15.2 | 15.6 | 15.2 | 15.2 | 15.9 | 16.2 |
Band Size | 30 | 32 | 34 | 36 | 38 | 40 |
Cup Size | C | C | C | C | D | D |
Bra Size | ||||||
US/CAN | 30C | 32C | 34C | 36C | 38D | 40D |
UK | 30C | 32C | 34C | 36C | 38D | 40D |
EU | 65C | 70C | 75C | 80C | 85D | 90D |
FRANCE | 80C | 85C | 90C | 95C | 100D | 105D |
ITALY | 0C | 1C | 2C | 3C | 4D | 5D |
AUS/NZ | 8C | 10C | 12C | 14C | 16D | 18D |
Need more help? Email us or head to our live chat.
How to measure
Bust
Place the tape measure under your arms, around your back and across the fullest part of your bust. Once you have the tape measure lined up, relax your arms at either side.
Waist
Measure around your natural waistline - this is usually the narrowest point on your waist (above your belly button and below your rib cage). Run the tape measure around your waist (like a belt), keeping it straight. Hips
Hips
Stand on a level surface with your feet together. Run the tape measure around the fullest part of your bottom and upper thighs, and not around your hip bones. Ensure the tape is straight around your body.

Bust
Place the tape measure under your arms, around your back and across the fullest part of your bust. Once you have the tape measure lined up, relax your arms at either side.
Waist
Measure around your natural waistline - this is usually the narrowest point on your waist (above your belly button and below your rib cage). Run the tape measure around your waist (like a belt), keeping it straight.
Hips
Stand on a level surface with your feet together. Run the tape measure around the fullest part of your bottom and upper thighs, and not around your hip bones. Ensure the tape is straight around your body.