No one truly seems to know if Suri Cruise really exists.  I am surprised that Tom Cruise and Katie Holmes have not put the baby on public display in front of their Beverly Hills home.  The confusion over Suri’s birth certificate only adds fire to the debate if baby Suri truly exists or is the creation of great science fiction.

The same nurse who signed the birth certificate for Tom Cruise’s daughter Suri also signed the birth certificate for Brooke Shields’ daughter Grier,  but there’s an interesting discrepancy.

On the Suri Cruise certificate, Heffernan’s license number is G48079.  On the Grier Henchy certificate, Heffernan’s license number is different — G068399.  TMZ checked with the California Board of Registered Nursing and we were told Heffernan’s license number didn’t match either of the birth certificates.  A Board rep told TMZ Hefferman’s license number is 317058.

And it gets more interesting. The Board of Registered Nursing told TMZ the license number on Grier’s certificate comes back to a Dorothy Rork.  The license number on Suri’s birth certificate is a mystery.  There is no name attached to that license number.

And then there is the mystery over who signed Suri’s birth certificate.

By the way, unlike Suri’s birth certificate, Brooke Shields signed the one for her daughter.  Someone listed as “Friend” signed the certificate for Suri.

Also, the hospital’s policy is to file birth certificates with L.A. County within 10 days of birth.  In the case of Suri, it took 20 days to file, in part because the “friend” didn’t sign for 16 days.  In Grier’s case, Brooke herself signed two days after her birth and the certificate was filed nine days after the baby was born.