I have lost my red book (about 3 years ago when we moved actually...) and am interested to know how tall Ds should be. He is INCREDIBLY skinny (though he eats a lot, he never stops), and i want to know because i now have DD who is just 1 and in both height and weight firmly on the 75th centile. She is by no means over weight, just perfectly in proportion. Ds never really got beyond the 25th- and i didn't worry since as my name suggests, i am rather titchy. He's 104 cm does that seem right?