Michael Caine at the GQ Men Of The Year Awards held at the Royal Opera House. London, England - 04.09.07

The 74-year-old British actor was dating Sinatra's daughter, Nancy, during the 1960s when he became starstruck on the flight to Las Vegas, Nevada.

He recalls, "All of a sudden, I froze. Tongue-tied. Sinatra said, 'Mikey, what's up? You scared of flying?'

"And I had to admit to him that it had suddenly hit me, I was sitting on a private plane with Frank Sinatra. I'd known him all my life in some way, and here I was, taking to him. 'Frank, I said, I'm overwhelmed."

Source: WENN