I wrestled with the same question a while back. I wanted to be able to see where I would end up eventually and breast forms seemed a good way. I eventually found a used pair, but quickly realized that a simple padded bra worked just as well. You already have breasts and they are developing, so the time you will get use from the investment will likely be very limited. For me, spending the money on fitted bras with lift and a little padding has been money better spent, but the choice is yours. Cool thing, you have options!