Sandra Bullock has nicknamed a mystery hunk she "flirted shamelessly" with at the Oscars.

The actress has been single since she divorced Jesse James following revelations that had had been unfaithful.

She attended the Academy Awards on her own last month and was seen laughing and joking with an unknown man who works in the media. Unfortunately, Sandra was unable to get his name before she had to get to work.

"She was smiling ear to ear. He kept telling her how beautiful she looked. She got all girly and started flirting shamelessly," a source told National Enquirer. "But then her people whisked her off before she could ask his name. So she's dubbed him Prince Mic' short for microphone."

The star has apparently been telling her friends how good looking the unknown gent was. She has made it her mission to put a name to his face before too long.

"Sandy can't get him out of her mind, so she's doing endless internet searches of TV stations to find her mystery man," the insider added.