Welcome to reality. Most media, magazines, movies, anime and porn tend to show women with lifted breasts but reality is different. Unless a women works up her body, specially her torso and shoulders(to give strength to her muscles to keep her breasts up), these are what natural breasts look like. And the heavier they are, the more difficult it is to keep them lifted.
Its all a matter of how much you're willing to accept that person for who they are.