A few people on the genie bra threads have mentioned that they wear crop tops instead of bras. Are they really a viable alternative? I have huge difficulties finding bras so would love to give pretty crop tops a go. I'm a 28DD, so not that big but need more support than the scraps of lace sold in topshop, urban outfitters et al. So where can I buy crop tops? Or are they a recipe for saggy uniboob?