At what point in time does the areola stop spreading? (Photo)

I received a benelli mastoplexy with no implants 19 days ago. I have a permanent suture in place, and I am happy, but I can see my left areola has spread on the bottom a bit, but nothing that bothers me, yet. My right areola is also a bit larger than it appears-they're very similar at this point. I am wondering at which point in time am I in the clear? 3 months? 6 months? 5 years? Also, I do have a permanent suture in place, so if it doesn't break, is there only a maximum distance it can spread?