A surprise best seller

I don't know what it is, but I've been selling a TON of these "I was worth the wait" infant shirts and creepers. When I first created this design, I thought it was cute, but I honestly didn't know if it was going to sell. Little did I know that it would be my biggest seller. If you've got a newly delivered bundle of joy, or if you know someone who does, consider this shirt for that little munchkin. Can all the people who've already ordered this shirt be wrong?