1. In this case, last really is best. Your new bra should fit comfortably on the last (or loosest) hook. The band will stretch with wear over time and initially fitting on the last hook will allow you to tighten the band keeping a snug, supportive fit for the life of your bra.
2. Handle with care. We recommend hand washing for best results. If machine washing is a must, use a lingerie bag to protect your undergarments and wash on delicate. Do not tumble dry. The heat will damage the elastic in the bra, cause the cups to lose their shape, and shorten the lifespan of your bra.
3. Let your bras rest. You'd get tired if you were holding up something all day, wouldn't you? Believe it or not your bras get tired, too! Have 2-3 'every day' bras on hand so you can rotate each day and give your bra time off. This will give the elastic time to bounce back to its original form and prolong the life of the bra.