I’m sorry; but that dress does not fit that girl. When she has so much “stuff” hanging out around her underarm, that is just an ill fitting dress. It is also too low-cut for prom. Where is her mother? Did she buy this dress for her daughter?
It's pretty obvious that the dress is designed to accentuate the cleavage by pushing the breasts together. It looks like the dress is a good size or two too small to begin with, as well.