Jim Carrey has just found out that he will soon become a grandfather.  His 21-year-old daughter Jane Erin Carrey is pregnant with her first child.  The baby daddy is her fiance Alex Santana aka Nitro of the rock band Blood Money.

Jane is a musician with the Jane Carrey Band.  Her mother, former actress Melissa Womer, was married to Carrey from 1987 to 1995.

Jim has been in a relationship with Jenny McCarthy since December 2005.

STORY UPDATE: Jane and Alex were married on November 14, 2009.  The father-of-the-bride, Carrey ‘tweeted’ on Wednesday night, “My Jane is a married woman.  Days ago her (sic) and my new son in law Alex got hitched.  The day was simply perfect…lots of love there… ”.

The couple expect their baby in March 2010.

View more photos below.

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Filed under: Jenny McCarthy, Jim Carrey