I personally agree with the help of hiding embarassing sights from under the t-shirt and also a padded can help provide more comfort when the chest is tender due to development. We sexualize items more than the kids do. I have a degree in sociology and we studied Gender Issues, including the sexualization of female clothing. Communication is the best way to fight this. However, what matters in this case is what feels most comfortable, physically on her, regardless of what WE as adults THINK it is about. The child needs a garment to help her feel comfortable as she develops. This should be a celebratory moment to bond as a mother and daughter. Relate to her about when you got your first one. Advise her of the struggles she can face in finding the right one....it is not easy because we are all different. Once the garment is decided upon, that you both agree with, treat her to something. Don't teach her to fear life's progress...teach her to evaluate what is needed and be proud of decisions made. It helps promote self esteem in youth when this stage of life can be so full of peer pressure and uncertainty. She should develop a sense of confidence, with your guidance, in making the right decisions in life without fear or feeling shame or embarassment.