I was thinking if you measured your breasts by wrapping a measuring tape around your back and across your nipples, if you did this measuring when your nipples were cold or otherwise protruding, you might get a bigger size than what you really typically are.
Also, sometimes it is hard to get the tape in the back to be exactly at the same level with the tape across your nipples, so having someone do this for you may lead to more consistently precise and appropriately done measurements than you doing the measurements, unless you made sure you did the measurements the right way. If the tape was not at the same level all the way around your body, and this level difference varies from time to time, it seems like these are bad or possibly inconsistent measurements, which may be causing erroneous conclusions about your breast and cup sizes over time.
This is also true when measuring under your bust. Keep the tape at the same level all the way around.
So... Take care in getting measuring done the right way all the time, regardless of who does the measuring. Use a wall mirror, for sure, if you are doing the measuring yourself. This helps a lot!
If you ever wondered why you concluded by your measuring that you are a B cup versus a C cup at other times, it could be because of inconsistent measuring. Regardless, you have to try on bras for a good fit I have found.
Chrissy
