Is this breast cellulitis? (Photo)

Hello and Great Question.  I appreciate the time you are spending researching this procedure.  My name is Dr. Matthew J. Nykiel.  I am a Board Certified Plastic Surgeon, a Fellowship Trained Cosmetic Surgeon, and a Cosmetic Breast Augmentation Specialist.
It appears as though you may have another spitting suture - which is common.  Please contact your surgeon for further treatment/examination.  
I hope that helps!  Best of Luck!
Matthew J. Nykiel, MD
#CoreAesthetic
Breast Augmentation Specialist
Board Certified Plastic Surgeon

Hello,This is not cellulitis, but instead a local infection around the sutures. They need to be managed by your surgeon. Although you chose a circumareolar mastopexy, presumably because of minimal scaring, you were not a candidate for it. Your nipple-areolar complex is still low, due to the original short distance between nipple and inframammary fold. Further, you will see that your scars won't be minimal after this heals. Go visit a few ABPS certified/ASAPS member surgeons who specialize in revision breast surgery. Best of luck.

Based upon your pictures, I don't think this represents true infection or cellulitis.  Spitting sutures are sometimes seen after incisions in thin, stretched tissue in this area and usually heal with conservative wound cares.  I recommend you maintain close followup with your surgeon.