Alexis Knapp, Ryan Phillippe’s ex-girlfriend, gave birth to a baby girl Friday. It was reported that he was at her side at the hospital. Knapp, 21, announced that she was pregnant in March 2011 and apparently told close friends that Phillippe was the father. That was six months after Phillippe and Knapp ended their relationship in September 2010.

Ryan Phillippe, 36, already has two children with ex-wife Reese Witherspoon. Sources say that he is a great father to Deacon, 7, and Ava, 11 and whether he is the father or not, he will do the right thing and be supportive.

Phillippe plans on taking a paternity test to determine his Knapp’s baby girl is his.