Continued weight loss after a breast reduction, will my breasts look deflated and saggy?

Thank you for your question.  This is the most patient pleasing operation we perform.
Timing of the operation will depend on the patient's life circumstances. In general (ideally), it is best to do this procedure ( like all other elective body contouring the stages, when patients have reached their long-term stable weights. Losing weight prior to the procedure will improve the safety of the procedure and minimize the need for further surgery ( in the event of weight gain/loss after the breast reduction procedure). Keep in mind, if you lose weight after having the surgery, your breasts may also change size and shape and you need to be OK with that.
Meet with well experienced, board certified plastic surgeon's who can show you examples of their work.  
  Best wishes as you work towards your goals and for an outcome that you will be very pleased with.

Good question. Not much stands between you and your goal weight. I suggest you get to within 5-10 pounds of your goal weight before surgery. If you lose much weight after a breast reduction there is a chance that your reduced breasts will sag or lose their shape once you lose the weight. In order to ensure long-term satisfaction with your results, it's best to be at your goal weight before you have surgery. 

My recommendation would have been to lose the weight prior to the BR.  Composed of breast tissue and fat, the breast will become smaller if you lose weight.  During a BR, the skin is tightened; if you lose weight, the skin needs to shrink and tighten to a smaller size. If it cannot, your breast will droop.  How much it loosens and droops varies based on how much weight is lost,  the laxity of your skin, etc.Kenneth Hughes, MD, Board Certified Plastic SurgeonLos Angeles, CA