Post-baby boobs and how to measure your bra size

July 5, 2011
how to measure your bra size, post-baby boobs

Post-baby boobs. Most moms I know (myself included) have a little bit of an obsession with them. Mainly because we are all so fascinated with how they've shrunk, grown, flattened, migrated... you get the picture.

It is pretty frustrating that something you were probably proud of at one time has now become something you can't help complain about after a glass of wine at the roundtable on girls night.

I have watched in agony and amazement as my boobs have continued to shrink since having my first child. A few weeks ago, I decided I was tired of stuffing my bra (sad, I know) and had to do something about it. Now, I don't particularly have the budget to go get measured (because at this point I had no clue what size I was) and purchase at Victoria's Secret or Nordstrom, so I decided to figure out how to measure my own bra size à la the trusty internet and head to Kohls to find something in my price range.

Here comes the sad part of the story... not only was a now an A cup (pre-baby: B, pregnancy & nursing: C), but... I ended up having to purchase my new bras from the Juniors department. This is no joke (oh, how I wish this were a joke). For some reason, Kohls didn't carry A cups in the women's department, so I had to wade through turquoise-colored, leopard-print-covered bras with star rivets and studded straps to find a decent bra (sans studs) in my size. Thankfully, I walked away with 3 of them and, quite frankly, my boobs have never looked better (well, except for when they were bigger).

Anywhoo... I wanted to pass along the info I learned on how to measure your own bra size so that you can save money and your sanity by boosting your bust. The measurement worked really well for me, and I feel so much better about myself in my new bras! If you're not feeling so great about your own post-baby boobs, maybe you just need to refigure your cup size and get the correct support.

So read the steps below for the easy 1-2-3 on how to measure your bra size.

How to measure your bra size

1. Measure band size:
Keeping the measuring tape parallel to the ground, exhale (let it all out!) and measure directly under your bust. Round measurements to the nearest whole number.
If the measurement is even, add 4”
If the measurement is odd, add 5”

2. Measure for cup size:
Stand straight with arms at side and measure at the fullest part of your bust (while wearing a non-padded bra). Make sure the measuring tape is parallel to the ground. I didn't have my tape completely parallel to the ground the first time around and got a measurement that would have given me a negative cup size, so be careful! I measured a second time and got a much better number. Don't forget to round measurements to the nearest whole number.

3. Calculate your bra size:
Subtract your band measurement (from step 1) from your cup measurement (from step 2). Generally, for each inch in difference, the cup goes up by one size. Figure out your bra size from the chart:

If The Difference Is: Your Standard Cup Size Is:
0"-1/2" (1.3 cm) AA
1/2"- 1" (2.6 cm) A
2" (5.1 cm) B
3" (7.6 cm) C
4" (10.2 cm) D
5" (12.7 cm) DD or E
6" (15.2 cm) DDD or F
7" (17.8 cm) G
8" (20.3 cm) H
9" (22.9 cm) I
10" (25.4 cm) J

Important note from This measuring system tends to become less accurate as the cup sizes go above a D. Additionally, some manufacturers name larger cup sizes differently. See "The Proper Bra Measuring Techniques for Plus-Size Women"

If you need help, check out the photo tutorial and video tutorial on

I hope this helps you tackle your post-baby boobs!

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