Emile Hirsch is a brand new father, after a woman he had a previous fling with just gave birth to the duo's son ... a son named Valor.

The actor, 28, was photographed holding his newborn baby boy in Cape Canaveral, Florida on Saturday -- where he looked like quite the proud papa with the little guy in his arms.

Early last month, The New York Daily News reported that he was expecting a child with a Florida woman he hooked up with. Though the two were no longer dating, the paper reported that Hirsch would be "doing the right thing and will be taking care of her and his baby financially."

Pretty cute kid, right? See more celeb offspring in the gallery above!

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