Awe how adorable! I love babies and there about the same age, well just a little younger then mine actually. I agree with Justin on how it is fun when they start getting color to see who can stay and who goes. That's what I am waiting for is for mine to get his colors and no more black and white lol! Congrats on your adorable little ones and best of luck on sexing them, sorry I can't be any help there!!