Same situation here. My 2-yr-old is the same weight he was as a 1-yr-old. He has gained height, but not even a little weight. He's thriving though, very interactive and curious, and our pedi isn't the least bit concerned. Some kids are just small. His father is a shorty, and I was an extremely tiny child, so he's just taking after us. Are you and her father small people, or were you slow growers as kids?