I promised an update after I took the kids to their check ups so here it is! According to their doctor they both are fine and looking good. Angie weighed 29 lbs (45th percentile) and was 38 and 1/4 inches tall (75th percentile). Caleb weighed 21 lbs, 13 oz (25th percentile) and was 31 inches tall (75th percentile). So both kids have above average height and below average weight. Caleb was of course perfect while they weighed him and the doctor looked him over. Angie did not like being weighed (I have no idea why) but she was great while the doctor looked her over. They both had to get shots so I enlisted Nick to go with me. I knew there was no way I could comfort them both at the same time.
The picture above is from Angie's actual birthday. As you can see, Caleb isn't always fond of getting hugs from his sister. Sometimes he loves them, but sometimes he just grins and bears it!