Telltale signs you're wearing the wrong bra:
The straps slide down your shoulders.
The chest band rides up in the back.
Your breasts peek out from the side of the cups.
How to get the perfect fit:
Your breast size can change up to six times in your lifetime, so get fitted for a bra once a year. A fit specialist will measure the circumference under and around the fullest part of your bust. Don't rely on yourself—you'll get a more accurate reading if someone else is holding the measuring tape.
Once you know your size, try on a variety of styles until you find the perfect support. But don't be a prisoner to size since it can vary from brand to brand.
View yourself from all sides. Use a three-way mirror to ensure that the bra lifts and separates (you don't want a uniboob!) and that the band is level all the way around.
The importance of the right support:
You'll stand taller and look slimmed in everything you wear.
Problems like drooping, back fat and a seemingly shapeless torso will be minimized or eliminated.
Not only will you have more clothing options, but increased confidence.