Why? Well, not because she's pregnant.

Nope, Mariah Carey and hubby Nick Cannon have revealed they're not expecting...but already have baby names picked out when that time finally comes.

The singer tells SIRIUS XM's Morning Mash up:

         "We have to keep the name secret because if we told everybody, then somebody
           might use it and then we have to change it, and then it wouldn't be so good.  We
           picked these names out a long time ago."

Soooo...hmmmm...ok.

If it's anything like any of the other celebrity baby names...(Coco, Apple, Inspector Pilot)...I don't think they need to worry about anyone stealing it.

More Mariah:
Mariah Carey To Release A New Christmas Song
Why Were So 'Obsessed' With Mariah