Will weight loss fix my saggy breasts?

Sarah

I used to be average weight and now I'm considered obese. My bmi used to be 22 and now my bmi is 35. I unfortunately did all this in under 2 years due to the birth control pill and poor eating habits. My breasts used to be perky and now they're really saggy. My breasts didn't get much bigger either, just saggy. Lets say I lose the 90 lbs of fat, would my breasts go back to they way they were before?