We didn't find out with either of ours - DP got to do the "we have a .... " for both of them which made him feel pretty special. Everyone accused us of knowing but not telling but it really didn't matter. We said if it's a boy we have 6 months to sort out room etc as bubs was always going to be rooming in with us at the start anyway and if it was a girl she would go into DD1's room once she was ready. We didn't tell Mum or MIL what we had until they came to the hospital with DD1 - they were really annoyed but we wanted DD1 to be the first person (apart from us) to find out that she had a sister.