Without them wearing the traditional pink or blue or having any specific gender items (nor of course looking at their bits) how old does a baby start looking like a boy or a girl?
Would you be confident looking at a newborns face and saying what sex it is?
Leon, your questions are rather puerile, and you might consider growing up a bit before you continue being silly. I may be wrong, but I think you are just trying to have a bit of fun at the oldies' expense.
People make fun of Leon's question...but if you think back to your own little ones as baby's, was it at 4 months...6 months...a year? When did the unidentifiable baby really look like a little boy or girl.
Thinking back, I'd say going by appearance only,my daughter could have been either at least until she was 6 months.
My son had the most gorgeous blonde curls when he was about 18 months and then someone commented on my daughter's beautiful hair...... He was wearing trousers and a shirt at the time, nowadays that wouldn't mean anything.