would this make you mad?

Kayla
So my husbands family lives an hour and half away from us and one of his sisters lives 7 hours away from us. We've been trying to think of a fun way to tell them we're expecting baby #3 and we wanted to do it a time when we're all together. Well next weekend everyone will be together because his sister is being induced with her third baby, I was thinking about getting a onesie made that said "best big cousin" and giving it to his sister after she has the baby while everyone is in the room and letting that be the baby announcement but I'm scared that will come off as us trying to steal the attention from her and the baby she just had. I keep trying to put myself in the place and I can't decide how I would feel. What do y'all think? Should we wait and announce later when all the family is not together? What would y'all do?