Porter went for his 21 month check up this week and we got his stats. He grew two inches since October to 35.5", still tall at 95% height for age. He only gained a little over 1 pound (better than I did in December) putting him at 28lb 140z. He is slimming down now, at only 75% weight for age - not a surprise since he's always on the go and has about a 2 minute attention span at meals.
Out of curiosity we went back to look at Matilda's records and Porter now measures exactly what M did at age 2.5. I guess soon we'll have to say younger brother, not little brother.