Bra Fit Guide

Bra Fit Guide

  • Band Size
    • Measure your underbust. Go around your rib cage and right under your bust.
    • If your measurement is an odd number, add 5 inches
    • If your measurement is an even number, add 4 inches
    • Example: If you measure to 31 inches, your band size would be 36. (31 inches is an Odd Number so we add 5 inches)
    • Sample chart

Underbust (Inches)

Band Size

25”-26”

30

27”-28”

32

29”-30”

34

31”-32”

36

33”-34”

38

35”-36”

40

37”-38”

42

39”-40”

44


  • Cup Size
    • After finding the band size, you will need to find your cup size
    • Measure the biggest part of your bust, around the front and back
    • Take that number and subtract this number from your band size
    • Example: If your band size is 34 and your bust is 36 inches, that would be a difference of 2 inches. That means you are a 34 band size and a B cup or a 34B
    • Sample Chart

Bust - Underbust = Difference (Inches)

Cup Size

1”

A

2”

B

3”

C

4”

D

5”

DD

6”

DDD


  • Sister Sizing
    • Sister sizes are different sizes with the same cup capacity or volume
    • Common misconception that larger cup sizes are always bigger no matter what band size
      • Because of how bras are made, a 36B cup size is actually bigger than a 32C cup size in cup volume
    • Cup size all depends on the measurement difference between your band size and your bust size. The difference determines your cup size
      • That is why 32D, 34C, and 36B will all have the same cup capacity or cup volume
      • As band size increases, so does the cup size, even though letters stay the same throughout all band sizes
    • Since cup volume is inversely proportional to band size, if one goes up then the other must go down
      • There are multiple ways to fix your bra problems. Here are some ways to fix common bra problems to find your perfect fit!

 

Something doesn’t fit right!

How to fix

Cups fit right, Band is tight

Band size Up, Cup size down

Cups fit right, Band is loose

Band size down, Cup size up

Band fits right, Cups are too big

Same Band size, Cup size down

Band fits right, Cups are too small

Same Band size, Cup size up

Both Band and Cups are too small

Same Cup size, Band size up

Both Band and Cups are too big

Same Cup size, Band size down


  • Other Bra fitting tips
    • Every Bra Fits Differently
      • Having Correct Size doesn’t mean Perfect Fit
    • Gore (center of bra) should rest on your chest without gap
      • If band fits well, adjust cup size up or down accordingly.
      • Check if your band is too loose and tighten it or try a smaller band size
    • Band should be snug of loosest hook so you can tighten it over time.
    • Band should stay in place when you lift arms up and down
      • If the band rides up, tighten your hooks or try a smaller band size but go up one cup size
    • Underwire should lie flat against your ribcage
    • Breast should not spill out the top, sides, or bottom of cups
      • Go up in cup size but same band size
    • Cups should not be wrinkled or pucker
      • Go down in cup size but same band size
    • If wire sits on breasts, switch to a smaller band
    • Straps should be tightened about every other month
    • If straps are digging in, the band is too big or stretched out
      • Tighten your band or a try a smaller band size (and up cup size if cup fits well already)
    • If cups are gaping (loose)
      • Tighten your straps
      • Go down a cup size if cups are still loose.
    • If cup overflows from side or top
      • Go up in cup size

 

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