Did you know that most woman wear the wrong sized bra?
There are a few common mistakes that women make often when shopping for underwear, one being that they are wearing an ill-fitting bra for overall fit.
See also: How to choose a sports bra
See also: A guide to 'magic' underwear
Bloomingdale's Erica Russo's advice is: "When you're trying on the bra, you can have two fingers underneath so it's not digging too much. The front should lay flat against the sternum, and the side band here should lay parallel to the floor."
Here she gives lots of advice on how to keep your bras for longer by storing them properly... oh, and never wearing the same bra two days in a row.