ANDY'S ANSWER: Wearing the correct-size bra will certainly make it more comfortable for you and make your clothes fit better as well. Your band should be snug, but not so tight that it cuts into your back. Your breasts should also not puff out over your bra under the arms or over the tops of the front of your bra. To find out what is your correct bra size, you will need a soft measuring tape.

Look in your Mother's sewing kit, not in your Dad's garage. It might be helpful to have someone else help you measure yourself, but you can also do it yourself.