NEW YORK — Mia Farrow says in an interview with Vanity Fair that it’s possible her son with Woody Allen is instead Frank Sinatra’s.

Farrow told the magazine that she and Sinatra “never really split up” and when asked if Ronan Farrow might actually be Sinatra’s son, she answered, “Possibly.”

Ronan Farrow tweeted Wednesday: “Listen, we’re all (*)possibly(*) Frank Sinatra’s son.”

Mia Farrow was married to Sinatra for 18 months. The singer’s daughter, Nancy Sinatra Jr., told the magazine that Ronan “is a big part of us, and we are blessed to have him in our lives.”

Farrow and Allen had a 12 year relationship but split in 1992, when the actress discovered the director was having an affair with her adopted daughter from another marriage, Soon-Yi Previn, now Allen’s wife.