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Buyer's Guide

Calvin Klein Underwear Fit Guide

Holly Thompson
Writer and expert1 year ago
View Holly Thompson's profile

With legendary campaigns and runway looks, there's a reason why Calvin Klein has been a household name for over five decades. As well as their ready-to-wear designs in mens and womenswear, Calvin Klein underwear is one of the brands most popular offerings. From their boxers to their fabric bras, comfort and support is just as much a priority as style, with their quality composition making Calvin Klein underwear sets a must-have. From what a size M means to how to measure your bra size, find all the answers you need in our Calvin Klein underwear fit guide.

Model wearing Calvin Klein fitted bra

#1 How does Calvin Klein Underwear fit?

Calvin Klein underwear fits true to size. If you're ever unsure on which size to get use our handy guide below. 

It's not uncommon not to know which size you are, so don't worry. Here's a useful guide explaining how bra sizes work, so you can finally be in the know!

#2 What bra size is a S, M, L, XL in Calvin Klein underwear?

Confused by the S, M, L or XL sizing of Calvin Klein soft bras? Use our guide below to easily convert into your size.

Step one - Find your size in the chart below and take note of the bust number associated to your size.

Step two - Take a look in the second table and find which bust measurement you fit into and voila!

32 A             83.5            69-71
32 B               86            69-71
32 C               89            69-71
32 D             91.5            69-71
32 DD              94            69-71
34 A              86            74-76
34 B              89            74-76
34 C            91.5            74-76
34 D             94            74-76
34 DD           96.5            74-76
36 A             89            79-81
36 B            91.5            79-81
36 C             94            79-81
36 D           96.5            79-81
36 DD             99            79-81
38 A           91.5           84-89
38 B            94           84-89
38 C           96.5           84-89
38 D            99           84-89
38 DD          101.5           84-89


















XS 79-84
S 84-89
M 89-94
L 94-99
XL 99-104
1XL 105-110
2XL 111-115
3XL 116-121

#3 How to measure your bra at home

Materials Needed:
  • A soft measuring tape
  • A mirror (optional, but it can be helpful)
  1. Wear a Well-Fitting, Non-Padded Bra: Make sure the bra you're wearing fits well and isn't padded. This will provide a more accurate measurement.
  2. Measure Your Band Size:
    • Stand in front of a mirror to ensure the measuring tape is straight and not twisted.
    • Hold the measuring tape firmly around your ribcage, just under your bust. Make sure it sits parallel to the ground.
    • Take a snug measurement, but not too tight. The tape should be snug, but you should be able to breathe comfortably.

    Record this measurement in inches.

  3. Measure Your Bust Size:
    • Keep the measuring tape around your back, but this time, position it across the fullest part of your bust. This is usually over the nipples.
    • Again, make sure the tape is straight and parallel to the ground.
    • Take this measurement without squishing or pushing down your breasts. The tape should sit flat against your skin.

    Record this measurement in inches.

  4. Calculate Your Cup Size:
    • Subtract the band size measurement (step 2) from the bust size measurement (step 3). The difference will determine your cup size.

    For example, if your band size is 34 inches and your bust size is 36 inches, the difference is 2 inches. This would suggest a B cup.

    • Use the following guide to determine your cup size based on the difference:
      • 0 inch difference: A Cup
      • 1 inch difference: B Cup
      • 2 inch difference: C Cup
      • 3 inch difference: D Cup
      • 4 inch difference: DD (E) Cup
      • 5 inch difference: DDD (F) Cup
      • 6 inch difference: DDDD (G) Cup
      • And so on...

Putting it Together: Your bra size is a combination of your band size and cup size. For example, if your band size is 34 inches and your bust size is 36 inches, your bra size would be 34B.

Remember that sizing may vary slightly between brands, so it's always a good idea to try on bras or consult the brand's sizing guide if you're unsure.

If you need to watch a demo, then here's one from Calvin Klein to help you.

Two women wearing Calvin Klein soft bras

#4 What material is Calvin Klein underwear made from?

For comfort and durability, the label's underwear is crafted from a mixture of fabrics including cotton, modal and elastine - to stretch and mould to your body shape.

#5 Signs of an ill-fitting bra

Spotting these tell tale signs will ensure you avoid any ill fitting bras in the future.


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Images and videos courtesy of Calvin Klein

Holly Thompson
Writer and expert
View Holly Thompson's profile