Bra replacing guide A woman will undergo several bodily changes during each phase of her life. Due to this, the size of the breasts will also fluctuate over time. Here are some reasons why the size of a woman’s bra changes: Weight gain/loss The breasts will go down or up in size when the body weight increases or decreases. Pregnancy  The hormones in a woman’s body will fluctuate, and preparations for lactation will begin during pregnancy. The change in size will continue while breastfeeding the baby. Puberty A woman’s body prepares itself for ovulation at the time of puberty. When the reproductive organs begin to function, the breasts will start developing, and there will be growth in the breasts up to a period. During these stages, the breast size changes, and if you are wondering, how do I know when...