Kaitlin Olson and Rob McElhenney welcome son Leo Grey

mcelhenney-olson-2010-getty.jpgLooks like things are getting even more "sonny" for Kaitlin Olson and Rob McElhenney. The "It's Always Sunny in Philadelphia" stars welcomed a new boy to their brood on Thursday (April 5).

People magazine is reporting that the couple gave birth to Leo Grey McElhenney at 1:15 a.m. The baby boy came in at 8 lbs., 5 oz. and is 20 inches long.

"We are overjoyed," the couple says in a statement.

This is the second child for the couple. Axel Lee is 19-months old.

Olsen and McElhenney married in 2008.

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