10/07/2009 13:05 BST | Updated 22/05/2015 10:12 BST

Jim Carrey To Become Grandpa!

Jim Carrey's daughter Jane is expecting her first child with longtime boyfriend Alex Santana.

"I am very excited. Jane is going to be a great mum," the 'Ace Ventura' star tells

"Jane is ecstatic. She and Alex are now engaged and are thrilled at becoming parents," a source adds.

Jane is the actor's daughter from his marriage to Melissa Wormer.