From: livestrong.com

How to Support Sagging Breasts

The right bra fit makes all the difference for sagging breasts.

Sagging breasts are a natural part of the aging process for women. As you get older, your skin elasticity decreases, which allows it to stretch. Combined with the weight of your breasts and the pull of gravity, breasts will sag.

Breast sagging causes problems with appearance since the breasts hang lower as they sag. Sagging breasts can also be painful if the weight of the breast doesn't have proper support due to the weight of the breast pulling on the skin. A properly fitted bra can support sagging breasts.

Step 1

Measure around your ribcage. Wearing a comfortable, non-padded bra, wrap a measuring tape around your ribcage, starting at zero, right at your bra line. Make sure the tape is straight and doesn't sag or ride up in the back. Without squeezing, read the number in inches on the tape where it meets with zero. Round up any fractions to the next highest number.

Step 2

Calculate your band size. If your ribcage measurement was an even number, add 4. If it was an odd number, add 5. This is your band size in inches. In order to support sagging breasts, the band has to fit perfectly.

Step 3

Note your bust measurement. Using the measuring tape, wrap it around the fullest part of your bust, starting with the zero end. Read the number on the tape in inches where it meets the zero. Round up if you're not exactly on a number.

Step 4

Find your cup size. Subtract your band size from your bust size. The difference between these numbers indicates your cup size. A 1" difference is an A cup, 2" is a B cup, 3" is a C cup, 4" is a D cup, and so on. Properly fitted cups provide support to sagging breasts.

Step 5

Choose bras with support. Underwire bras support sagging breasts with a thin wire to hold breasts up. In order to support breasts, avoid very stretchy or camisole-type bras. These offer little more than coverage and won't hold breasts up. Good support comes from sturdy materials that have only a little give in them and molded cups to keep breasts in place.

Step 6

Toss your old bras. Bras that have lost their elasticity are not supportive, even if they are your correct cup and band size. Over time, bras stretch out, letting breasts sag.

measure with your bra on. It will give you an idea of where to start. You will have to try on a lot. they all fit differently. even with in the same brand. lol sorry
use a department store where someone will run and get you another size . I spent all day running back and forth at 3 different stores . a real pita!
good luck

This is why I love Victoria's Secret. They measure, give advice and go get extras as needed.

Thanks to you both!

Nordstrom's is known for their trained lingere sales people for knowing how to help you find a great fitting bra.

donna, thank you so much for posting this question. I was fitted by a bra specialist last week from wacoal. It felt fine in the store, but I was debating between two styles so she said just take it home and decide. The first one I kept on about 20 minutes and was ready to throw it out the window. It was hurting so back at the clasp in the back. I waited until the next day to try on the other style and I really can't use either one. I measure 31 under the rib cage so she put me in a 34, in the last hook its just too tight. These were not cheap bras so think I will take both back. I would love to have one that is comfortable and also give me the support I need. At one point I was going to sew one, but thank goodness I didn't go that route. I may have gotten use to them being so tight, but didn't want to wear them for any length of time and take them back.

I go to our local JC Penney where the lingerie department has a wonderful sales associate who has been fitting local ladies for years. She really knows her stuff and I've never had her steer me wrong. The girls always look and feel better after she's fitted me for new bras. I get new bras and throw the old ones out (on a rotational basis, the oldest ones going first) every 9-12 months. I usually buy 4-5 bras at a clip so that I'm not wearing the same ones over and over and over. They last longer that way.

My question is,If they can put a man on the moon why can't they make a comfortable bra? Can you say comfortable and bra in the same sentence??? If I did find a comfortable one they probably would discontinue it !!!!!