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As an angsty adolescent with freshly-acquired boobs, I remember feeling so excited to go shopping for my first bra. After years of wearing cartoon character crop tops and singlets ‘with shelving’ (I was completely flat-chested but my mum humoured me, bless her), I was finally joining the ranks of girlies with alphabet cup sizes. No more shopping in the kids’ section for me!
For more on big boobs and fashion, head .
Believe it or not, your boobs started growing in the womb with the development of your milk-duct system. Then, during puberty, they change thanks to increasing estrogen levels. (Estrogen is a hormone that builds fat in your connective tissue.) Your breast size, areola, and nipple size generally grow larger, making changes in breast shape and size more noticeable. Your boobs will likely continue to change throughout your life, which is totally normal.
Your breasts are a complex part of your anatomy, made up of supportive or connective tissue, milk glands and ducts, and fatty tissue. How much of each tissue type you have is unique to you. Some people have more supportive tissue than fat and vice-versa. If your breasts contain a higher concentration of fatty tissue, you could see a difference in your boob size when you gain or lose weight, , ob-gyn at in Santa Monica, California, tells SELF. Keep in mind that weight loss can look different for everyone. Some people may notice their boobs are smaller or shaped differently after losing weight, while others may not. But in general, losing large amounts of weight (think: over a hundred pounds) can lead to smaller breast size and possibly drooping.
If you started lifting recently and noticed your boobs seem a little perkier, there could be a connection there. Doing pectoral exercises, such as the chest press, can strengthen your pecs, which are four major muscles that sit behind your breast tissue and facilitate deep breathing and arm movement. If your pecs muscles grow, this may cause your boobs to push out a tiny bit more than usual, , of SoHo Strength Lab, tells SELF. Keep in mind that these exercises won’t actually increase your breast size—but they might grow the muscles behind your breasts. If those muscles become larger and push your breast tissue out further than before, then your boobs may appear a little larger.
