.: getty :. 

 

FROM TMZ's able reporting... 

 

Chris Hemsworth and his wife are at Cedars Sinai Medical Center right now giving birth to twins ... TMZ has learned.

It's ultra-high security in their hospital suite ... we're told 2 security guards are standing at the door.  Chris is strolling the hallway and is being escorted with a guard.

Chris and his wife Elsa Pataky already have one baby -- India Rose Hemsworth who is now 22 months old.  She's about to have a couple new siblings.

Chris and Elsa were married in 2010.

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