I really do love a great fitting bra so once a year I take do a bra fitting measurement to make sure I'm purchasing the right size. My favorite bra brand is Bali. I just love their selection of supportive, sexy bras. And the best online store: One Hanes Place! They have terrific sales!
If you need help with measuring you might want to go to a bra specialty shop or the lingerie department for assistance. Better yet, ask you hubby or partner. Then when you ask them what your bra size is they'll actually know!
Check out this HuffPostLive clip, with a spokesperson from Linda, The Bra Lady speaking about the importance of the right bra, for your bust size, for every outfit.