My 10 week old is on the 0.4th centile for height (one in 250 healthy children measure this height), my DD was beneath it at birth and is still tiny. I'm tiny but my OH is 6ft tall. Has anyone else had the same thing? I'm worried about him, he's going to be the youngest in his school year. I had IUGR with my daughter in pregnancy, this time around him measured normally. He was 6lbs 10oz at birth, following the 9th centile for weight.