Mia Farrow and Woody Allen had a lot of children together, but most of them were adopted (including, famously, the one the Woody is now married to). Only one of them was their biological child--the one pictured here with Mia, Ronan. Well, Mia let it slip the other day that Ronan might not be Woody's biological child after all. She also had "relations" with another big celebrity around the time of Ronan's conception. Take a look at the picture of Ronan. It's pretty obvious who it is.
Sorry, Woody. The boys a dead ringer for Ol Blue Eyes (who was 77 years old at the time of Ronan's birth)
Credit: D Dipasupil/FilmMagic