Their son Jack was born on Aug. 25. Pratt, 33, and Faris, 35, "are happy to announce the birth of their beautiful baby boy Jack," their rep told People in a statement. "He arrived earlier than expected and will be spending some time in the NICU. The happy parents thank you for your warm wishes and ask that you honor their privacy during this time."
The couple announced they were expecting in May. Faris was due in the fall.
Pratt and Faris, who most recently starred in The Dictator, married in 2009.