I've been expecting it for a while now, but it's finally confirmed - M is taller than I am. And still growing... D is expecting to be outgrown by M's birthday in just less than a month.
Not to be outdone, A is keeping up the pace. I measured him the other day and found that he was almost exactly the same height as M, with less than a month's difference in ages at the time. I had to send A back to change clothes this morning as both his shirt and his pants were noticeably short on him. Even then, the second pair of pants was still a bit short. I guess it's time to go through his drawers again and do the pants sort.