Apparently one of the side effects of prednisone and other steroids, apart from causing weight gain, is that it inhibits growth. Or, in Collin's case, stops it altogether. He has not grown at all in almost 2 months now. Lengthwise, that is. He's not even on the charts for length anymore, though he is in the 95th percentile of weight for height - meaning that only 5 percent of all babies his length are fatter than him. This is where I make a half-sad-half-amused face. I don't think they have an emoticon for that.
The result (besides his nutritionist keeping a super tight rein on his calories) is that we have to put him in 9 month clothes because we can't snap the 6 month clothes around his belly and legs. Unfortunately, 9 month clothes are much too long, so his sleeves and pant legs are rolled up twice. We have also had to temporarily abandon cloth diapers because his legs are so fat that, with the extra bulk, he can't kick at all. But he does hold the baby home run record.