Needing suggestions

Jocelyn💋 • Have a wonderful life that I have to thank the Lord for❤️ have a son and expecting baby girl🌹
So I find out what I'm having in April, and I want to get a shirt airbrushed either saying, "I get a little brother."
Or, "I am getting a little sister." With the due date on it for my son to wear around my family to see if they notice it. Does this sound like a good idea? 
I'm open to suggestions but I don't want throw a surprise party lol or the cup cakes, because everyone will know what's about to happen.