Sean Penn is getting ready to be a daddy again but this time, the child is already here. Penn, 54 has filed a court petition to legally adopt his new fiancee Charlize Theron's son Jackson, 3. Theron had adopted Jackson and now, the duo is talking more babies. Penn has already been married twice: Madonna and Robin Wright with whom he had two children with. His daughter Dylan is 23 and son Hopper is 21. Penn and Theron reportedly became engaged in November of 2014. We wish them all the best as they enter into this new chapter of life!