Bra and Underwear Size Chart


We want to make you feel more comfortable than ever before. That starts with getting the right size for your shape. We’ve tested our bras and underwear on hundreds of women to identify the fit of their dreams. Using the bra and underwear sizing charts below, we can help you find yours.
For a personal fit consultation, email us.

How to measure your bra size

Our bras will fit a bit differently than you’re used to,
so we encourage you to use the guide below to find your perfect size.

  • How to measure

    Band Size

    Measure snugly around your ribcage, directly under your bust. Add 2” to your underbust measurement, & round up to the closest even number.

    For Example
    31” + 2” = 33”, rounded up to 34”
    Band size = 34”

  • How to measure

    Cup Size

    Wrap the measuring tape loosely around the fullest part of your bust. Compare your across-bust measurement to your band size. For every inch difference, add a cup size.

    For Example
    34” band size & 36” across-bust
    measurement = 2” difference
    Go up 2 cup sizes. Cup size = 34 B

Band to cup size difference

1” = A | 2” = B | 3” = C | 4“ = D | 5” = DD | 6” = DDD/E

Longevity Bra Size Chart

Band Size
S 32”  81cm
M 34”  86cm
L 36”  91.5cm
XL 38”  96.5cm

Evolution Bra Size Chart

Your bra size = Knixwear Size

32A 1 32B 1 32C 2 32D 4 32DD 6 32DDD/E 6
34A 1 34B 2 34C 4 34D 4 34DD 6 34DDD/E 6
36A 2 36B 3 36C 3 36D 5 36DD 7 36DDD/E 7
38B 3 38C 5 38D 5 38DD 7 38DDD/E 7
40C 5 40D 8 40DD 8 40DDD/E 8
42D 8 42DD 8 42DDD/E 8

Underwear Size Chart

Size Pant Size Hips (IN) HIPS (CM)
S 0 - 6 30” - 37” 76 - 94cm
M 8 - 10 38” - 41” 96 - 104cm
L 12 - 14 42” - 44” 106 - 112cm
XL 16 - 18 45” - 47” 114 - 120cm
XXL 20 - 22 48” - 50” 122 -128cm

Athletic Underwear: Features LYCRA® Sport technology to maximize freedom of movement, compression, stretch, and recovery. The stretch tech means these will relax a bit more than the Everyday line.

Everyday Underwear: Everyday underwear keep their shape beautifully, and will hug you more snugly than our Athletic line.

Sport Sock Size Chart

Size US UK EU CM
S 6-8 3.5-5.5 36-38.5 22.5-24.1
M 8.5-10 6-7.5 39-42 24.6-25.9
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