It's ridiculous when you have to tell your sister not to tell your dad and grandparents the gender…

It's ridiculous when you have to tell your sister not to tell your dad and grandparents the gender of the baby until you tell them..I'm going to be finding out at my birthday meal with my mum and brother and other grandparents (divorced family 😂) and then will probably put it on Facebook so my friends can know...I don't know if I'll see my dad etc on my birthday so would have to tell them another day but got my sister on Facebook so I know for a fact she would be right on the phone to them saying "Steph is having a boy!" or "Steph is having a girl!" absolutely ridiculous that I actually have to tell her not to say anything...you think it would be common sense.