Our adopted little girl who is now 2 1/2 only weighs 20 pounds and still wears a size 9-12 month. I have seen both bio parents and they are not small. She also has a Bio brother born a year to the day after her and we hear he has some medical issues that are similar and they are now doing genetic testing. So far, our daughters doctors don t seem to concerned, but she is our youngest of 8 children and her weight seems for to be really low for her age.
Hello welcome to Chat Doctor average eight at 2 1/2 years is 26 pounds, yes she in underweight but more important than a single value is growth pattern of baby, if she there is downtrend in percentile, you need to worry and rule out any disease responsible for it. If her growth pattern is OK you need not worry and monitor her weight at 2-3 months intervals.Apart from weight you need to monitor height also. Hope I answered your query.