Taking good care of your bra can extend its usual lifespan from 6-9 months to 12-14 months. However, when the shape of the bra becomes uneven and the underwire feels like a restraining chamber even in the loosest hook, you know you’ve outgrown your bra. And wearing a tight bra underneath your favourite dress just because it looks good is not something we recommend you do for a good picture on the gram.