Telling ur children they r gonna have a brother or sister.

Ok so i havent told my children im pregnant yet. My son will understand cuz hes about to be 8 and my daughter is only almost 2. I wanted to tell my son the minute i found out but im waiting till my ultrasound Tuesday when the pic will actually look like a baby now. I made them shirts to take pix when the baby comes and im gonna make the baby a onesie. But i decided im gonna put their shirts on without them knowin what they say and im gonna hand my son the ultrasound photo and take their picture. Hope my son is excited to be a big brother again. He was a lil jealous at first of his sister cuz he had mommy to himself for 6 years. But as soon as she came u dont mess with his sister. Lol.