How did you guys announce to your little ones about them having a baby brother or sister?

My boyfriend and I are expecting our first child together. He has a daughter who is 5 from a previous relationship and wants to tell her in the next couple of weeks that we're going to have a baby. I have had 2 miscarriages before and we told her about the first one but then I lost the baby. She didn't have any reaction to the news at all. She didn't say anything and just gave us this blank stare and went back to what she was doing. I will be 10 weeks tomorrow and trying to think of announcements to everyone and having a hard time finding ones that I like. So tell me, how did you guys announce to your other little ones?