Thank you for your question regarding how to remove excess skin and fat from the sides of the breasts and if this can be done during an arm lift. The answer is yes; the side breast can be addressed during an arm lift and reduction. This can be done by connecting the brachioplasty (arm lift) incision to the vertical torsoplasty (addresses side boob and some back fat) incision. I use the "Z-Plasty" technique to connect the two incisions to avoid tightness in the arms during recovery. With the torsoplasty, the incision can also be taken down the side of the abdomen, ending over the hips, to give you an hourglass shape. I've performed many of these arm lifts + torsoplasty procedures and the results are EXCELLENT. I'll attach a video below of this exact procedure, combined with a breast lift and augmentation. I specialize in arm lifts. I hope that I have answered your questions regarding the arm reduction. If you have any more questions regarding the arm lift, arm reduction, brachioplasty or arm crease fat grafting, please contact my office. Since a brachioplasty or arm lift surgery is a difficult procedure, please seek an experienced, board-certified plastic surgeon with significant experience performing these types of arm lifts. Do your research. Make sure your chosen plastic surgeon has performed at least 100 arm lifts. Make sure they have the before and after pictures to prove it. Carefully examine their before and after pictures and check their reviews on RealSelf. Sincerely, Dr. Katzen. (“Verified” Plastic Surgeon, President of the American Society of Bariatric Plastic Surgeons, certified by the American Board of Plastic Surgery, Fellow of the International Society of Aesthetic Plastic Surgery, American College of Surgery, International College of Surgery, and American Board of Metabolic and Bariatric Surgery, and member of the American Society of Plastic Surgery, American Academy of Cosmetic Surgery and RealSelf Hall of Fame.)