apparently it's 3 lines that give it way but it's harder to tell with girls,because the only other giveaway is if there is no dangly bits at the front.

I had my 20 week scan and was told it might be a girl because of the lines ( wich make up the labia(sp)) but this could also be the testicals that haven't droped down and without seeing if there is dangly bits at the front there is no way to definatly tell and our bub#2 wouldn't move to to show us if there was/n't any she wouldn't even give us a % she was that unsure .....

Our DD is a girl (obviously) and her ultrasound there was no mistaking she was a girl because of the 3 lines (that and it looked like she was sat on a glass table showing the world her girly bits) hehe.

anyway i hope you have fun guessing and that you have a happy and healthy baby *hugs*