Showbiz 411's Roger Friedman said that the 66-year-old laughed when he asked her if Mia Farrow's son Ronan was her brother.
He said that Tina, who is the daughter of Sinatra and his first wife Nancy, told him: 'Couldn't be. Frank had a vasectomy before that. I don't know whose son Ronan is.'
Frank Sinatra (left) underwent a vasectomy so could not have fathered Ronan Farrow, (right) according to his youngest daughter, Tina Sinatra
Mia Farrow had previously admitted the singer may be the father of her Ronan (both pictured)
It has never been reported before that Sinatra underwent the medical procedure.
In 2013, Mia Farrow admitted that Frank Sinatra may be the father of her son, instead of Woody Allen.
|Tina Sinatra, 66, ridiculed claims Ronan Farrow was her brother|
Rumours about the parentage of her son Ronan, 27, have long dogged the actress, and she addressed the issue in the interview saying the legendary crooner was 'possibly' his father.
Ronan Farrow later responded by tweeting: 'Listen, we're all *possibly* Frank Sinatra's son.'
Farrow, now 70, said that Sinatra was the great love of her life, and says, 'We never really split up.'
Farrow married Sinatra in 1966 in Las Vegas when she was 21 and he was 50.
The marriage fell apart 18 months later when she refused to drop her critically-acclaimed performance in Rosemary's Baby to star in a movie with her husband.
They divorced in 1968.
Two years later, Farrow married German-Austrian pianist Andre Previn.
The couple adopted three children and also had three biological children before divorcing in 1979.
In 1980, Farrow started a long-term relationship with Woody Allen, although the two never lived together. She and the children stayed in her massive Upper West Side New York apartment while he had a home on the other side of the city.
Farrow became Allen's muse and starred in 13 of his films, most notable Hannah And Her Sisters in 1986.
Earlier bonds: Woody Allen and Mia Farrow walk as Mia carries their son Satchel, who later changed his name to Ronan
Read more: http://www.dailymail.co.uk/news/article-3021770/Frank-Sinatra-vasectomy-Ronan-Farrow-not-son-claims-Tina-Sinatra.html#ixzz3vYL5fuTd
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