Robert Pattinson - Twilight Stars Hit By Awkward Fan Questions

TWILIGHT co-stars ROBERT PATTINSON and KRISTEN STEWART had an odd encounter with fans during an appearance on U.S. late night TV show JIMMY KIMMEL LIVE! on Friday (20Nov09) when they were quizzed about shirt buttoning and flu shots.

After questioning the onscreen lovers and co-star Taylor Lautner, Kimmel turned the questioning over to fans in the audience - and they left Pattinson and Stewart shocked and a little freaked out by their probing.

One superfan, called Ana, asked the Brit why he often misbuttons his shirts before TV interviews.

A stunned Pattinson, who obviously had no idea his TV appearances were so closely scrutinised, said, "I think it's 'cos my centre of gravity's all messed up... I think it effects everything... (but) I didn't know it was being noticed... Is it a bad thing?"

Another fan, called Troy, then freaked Stewart out by asking her if she'd had a swine flu shot.

Obviously creeped out by the question, the actress responded, "It's so strange that you say that; I did that yesterday. Why? Do you know something... No, seriously, I'm genuinely freaked out by you right now."

A third audience member then asked Lautner if she could have the shirt he was wearing.

The actor said, "Maybe after the show."