My two year old is not gaining weight like she should she is 2 years old and is only 23 lbs. The doctors tell me they cant find anything worng with her, and that they want to wait until her baby sister is a little bit older to see if the same things happens. I have even took her to a nutrition specialist, they said she's getting everything that she needs. We did a blood test to see if she was alg. to anything and everything was okay but for peanuts. I understand that my husband and i are skinny but i dont understand how she can be that skinny when she eats all the time, she looks like she is only 15 months old. every one has to ask me how old she is. and when i tell them they are like wow she small. does any one else have this problem?