Instead, Twitter fan Mariah is asking followers to guess the names of 'dem babies' as she calls them.
Giving fans a few hints to go on, she posted the message: 'So we r bout 2 reveal the actual names and b4 we tell em 2 our friends etc. I had 2 C if any of the #lambily wanted 2 guess! Both begin w/M's!!!!'
So, we thought we would see what you think the couple should name the twins. We reckon Mariah itself might be a possibility for the girl, and about something really street like Marcel or Marik for the boy?
Share your guesses below, and we'll keep you posted on what the Hollywood couple plump for.