Washington, Feb 25: Oscar winner Kate Winslet has laughed off Hugh Hefner's offer to bare all for Playboy, insisting she isn't sexy enough to grace the cover.

Magazine mogul Hefner had revealed he would love to have the `The Reader' star join previous posers including Marilyn Monroe, Sharon Stone, Pamela Anderson and Charlize Theron.

However, the 33-year-old actress has denied the offer to grace the men's magazine's cover.

"This is not a proposal that would interest her," Contactmusic quoted her spokesperson as saying.

And when website TMZ. com told the actress of Hefner''s offer, she replied: "I have no idea what you''re talking about. I don''t believe that for one second!" she said. (ANI)