Make every calorie count. This is good advice for any baby.
Cereal is empty calories. It's just rice, stripped of nutrients, then nutrients artifically pumped back in. The cereal industry pays docs a LOT of money to convince us otherwise. But "baby cereal" is a crock. Gosh, what did we do before the baby cereal industry? Read below...
Feed her REAL food- squash, yams, ground up meat, WHOLE milk (organic, hormone-free), veggies, etc. Avoid the packaged stuff. If there's more than 10 ingredients, it probably isn't real food. At 16 months, I just basically took whatever I was eating, cut it into small pieces or blended up in my Magic Bullet, and fed it to my boy, who, to this day, has never been sick (except for teething-related booger blowouts :)
To the poster who suggested that giving babies more fat is bad, I need to say: giving a baby food that has fat in it is VERY GOOD, if it is the trans-fat-free kind. Like olives, olive oil, nuts, and fat that is in organic free-range meat, eggs, and dairy. Fat gets a bad rap, but we all need it to fuel our brains, which burn up 20% of our calories each day. And babies need even more, because their brains are growing and developing. People on "fat-free" diets can suffer from memory loss and brain fatigue. When I heard that a coupel years ago, I switched to eating a "good fat" and protein with every meal. It keeps me feeling satisfied, and I am at a perfect weight.
On this diet, if they end up skinny/fat, whatever, at least you know it is their natural weight---because they are on a natural diet!