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How to Size

the fitting room

No fairy godmother around to help measure you? Never fear.

With our foolproof and flexible sizing, you won’t need her or her magic wand to find the perfect fit for your beautiful new intimates.  

No matter if this is your 1st or 4th babe, each time is unique.  And though there is a lot of variation, most mamas increase by one to two cup sizes during pregnancy, and at least one size in the band.

A woman who was 34C pre-pregnancy, might be a 36D, a 38C or even a 34DD when her milk comes in and her body adjusts. The Dairy Fairy bras have plenty of adjustability and feature 4 inches of hook and eye closure in the back (6 settings) to accommodate as you grow, and shrink. 

How to Measure:

Don’t let your old Bad Bras trick you into thinking everyone is the same. The Dairy Fairy sizes to fit based on our Right Size Chart and measuring guide, or you can use our bra size calculator.

  • Use a tape measure (instructions below) and match up your typical size to The Dairy Fairy Right Size Chart
  • Don’t use your old Bad Bras to measure. They’re well-worn, often-stretched, mis-sized bearers of bad news and we don’t have room for that kind of negativity in our lives - or bra fittings!
  • If you’re between sizes, we recommend going with the one that matches your band size, as that’s the most essential for fit and function!


We have two sizing ranges that cover soft bras and structured bras:


Structured sizing; for the Ayla, Noa, Pippa and Leila styles. 





SOFT BRA SIZING; For the Rose, Arden, Emma, Coco and Mia styles  



Not a math wiz - just click HERE and enter your measurements into our online size calculator!

If you are ever in doubt, just ask for help; that’s what she’s here for!