Fabric stretches, and therefore so do bras, so using an old bra is not an accurate way of measuring your cup size or judging if you need re-measurement. They start to lose shape at around the six ...

a well-constructed bra, with soft breathable fabric. Your bra should have a “relax period” to extend its life, Rockwell notes, and not be worn every day. The ideal bra fits the contours of ...