Breasts have different meanings in different cultures. In some cultures, it si fine for women to go bare breasted. In other cultures, doing this would be considered very shocking and indecent. In most places, however, growing breasts is a big event in a girl's life. It is a sign of growing up.
Most girls come to like their breasts.
I used to admire my elder sister who already had breasts. I used to fold my stockings and put them inside my dress. I was happy when they came, so I could also wear a bodysuit. I felt like I was the oldest girl in the class. It took me time to accept the changes that were happening to my body.