Some girls worry because one breast develops before the other. A 14 years girl told me:
One of my breasts was starting to grow. The other one was still completely flat. I was afraid that the other one would never grow - that I was only going o have one breast instead of twoOther girls worry because one breast is larger than the other:
Both of mine started growing at the same time, but one of mine was a lot bigger than the other one. I was worried that I was going to grow up all lopsided.
Often a breast bud develops under one nipple while the other breast remains flat. The second breast bud usually develops within six to twelve months.
While a girl is developing, one breast may be noticeably larger than the other. This is perfectly normal! It is most common in Stages 2 to 4 as discussed in 5 Stages of Breast Development. By the time a girl reaches Stage 5, the two breasts are usually about the same size, but some girls continue to have a noticeable difference in size even as adults. If the difference in size bothers a woman, you can wear a padded bra or bra insert or you can have a plastic surgery to correct the size differences. However, this surgery is usually done until a girl has finished puberty. In the meantime, you can wear a padded bra or bra insert.