RAGING DAUGHTER: Robert De Niro’s daughter Drena allegedly attacked ex-boyfriend Austin Young (above) and smashed a potted plant outside his building. (William Miller)
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Robert De Niro’s daughter flew into full “Raging Bull” mode last night — attacking a former flame in a fist-flying frenzy in Greenwich Village, witnesses and cops said.
Actress and producer Drena De Niro, 43, allegedly attacked ex-boyfriend Austin Young, 32, as he walked his dog on Downing Street at about 8 p.m.
Young told The Post he’d stopped to chat with a neighbor when Drena — who was adopted by her Oscar-winning dad when he married her mom, Diahnne Abbott, in 1976 — stormed over and slugged him in the face.
“For 15 minutes she whaled on me and yelled at me,” said Young, a construction worker.
“I can take a punch, but she whaled on me, like, 10 times. She’s a Thai boxer, and a very good one.”
Police said a domestic-incident report was filed, and confirmed Drena was accused of punching Young. There were no arrests because there were no injuries.
The battered former beau, who had cuts on his arms, said he suspects Drena, who split from him last year, is furious he has a new love.
“I think she heard about my new girlfriend moving into my apartment,” he said. “She’s very bitter with the way our relationship ended.”
The public beat-down escalated as Young’s dog broke free from his leash.
“He chased the dog, and Drena chased [Young] down the street, punching him and ripping at his shirt,” a witness recounted.
At one point, Drena grabbed a potted palm tree outside Young’s building and smashed it on the sidewalk.
Young said he and Drena dated for about a year and were briefly engaged, but her father didn’t approve.
“Her dad didn’t like me and kicked me out,” he said. Drena returned the ring.
During last night’s fight, she allegedly yelled, “I want my sweater back, I want my engagement ring back! I want to be compensated because you never loved me.”
Drena couldn’t be reached for comment last night. A representative for her father declined comment.
Young can’t believe she wasn’t arrested, saying, “If the roles had been reversed, I would have been arrested.
“I feel like I was bullied by celebrity power.”