Why are breasts different sizes?

During puberty, breasts don't always receive identical amounts of the hormone that makes them grow. Why does this happen, and how common is perfect symmetry anyway?

Bra Size Chart India – Explore the List of Bra Sizes

4 Ways to Make Two Different Size Breasts Appear the Same

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Set Of Round Line Icons Of Different Female Breast Size, Body Side View. Various Boobs Sizes, From Small To Large. Sizes Of Busts, From A To F. Vector Isolated On White. Royalty

Causes of Uneven or Asymmetrical Breasts

Breast Augmentation Size Chart - Implant Sizes and Cup Sizes

Why do women's boob sizes vary? - Quora

Why Is One Breast Bigger Than the Other?

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