CelebSpice

Taylor Swift fears she will have "a heart attack" when she makes her presenting debut.

The 19-year-old singer - who is rumoured to be dating 'Twilight' hunk Taylor Lautner, 17 - is terrified about fronting hit US comedy show 'Saturday Night Live' this weekend but can't wait for her stint in front of the camera.

She wrote on her Twitter page: "Starting the SNL process I kinda feel like I might have a heart attack or pass out in the pitch meeting. I'm that excited.(sic)"

Despite her fears, Taylor can't stop thinking about the show and admitted last week she is incredibly organised in her preparations for presenting the programme.