perfectly select baby gender

My cousin was having a gender reveal party at their house. I was so excited. Though I had not felt that feelings since I am still not married. But I am going to soon with my boyfriend. So after me and my boyfriend reached there , we saw the house was decorated so nicely and my cousin was really happy and excited simultaneously. She has used this perfectly select baby gender and got the result. After the reveal we got to know a baby princess was going to join in the family. We were so happy.