Exercise help please?

i have a silly question. are there any exercises that reduce breast size. I've been working out for about 5 months and have lost 15 lbs, on top of the 30 I lost while going through some health issues. I've heard that your breast size could go down when you loose weight and mine didn't, especially because I started birth control and they grew. if you know of any could you let me know, its kind of awkward being skinny all over but having a big bust, you know.
Exercise help please?
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