This depends on your lifestyle but generally we recommend owning three everyday bras. One to wear, one in the wash and one “resting”. You should never wear the same bra two days in a row because the elastic fibers need to rest a full 24 hours to retain their original shape. By rotating three bras you will extend their useful life. You will also need strapless bras, sports bras and date night bras. The number will depend on your lifestyle and your wardrobe needs.