ROBERT Pattinson joked that fans must have a 'mental disorder' to camp out in the cold to see stars of the film at the UK premiere of the final insallment of Twilight.
Pattinson told frenzied fans at the final film's London premiere that the saga had ''changed everything'' about his life.
But he said he did not understand why they would have camped out in the cold to see him.
''It's very, very, very cold and I don't understand what kind of mental disorder you have," he said.
Stewart, who plays Bella, dazzled in a black lace jumpsuit, designed by Zuhair Murad.
Meanwhile her on and off-screen partner Pattinson, who plays Edward, and Lautner, who plays Jacob, dressed smartly in suits
Pattinson, 26, told the crowds in an interview on a specially erected stage that the saga connected to people on a ''primal'' level.
''For me it's changed everything about my life. I don't even think I'd be acting if I wasn't doing this, or if I hadn't done the first one. It's crazy. The character and the whole experience combined for me,'' he said.
''It's definitely really created something which connects to people on a very fundamental level, it's like primal.''
He joked that the fans must have a ''mental disorder'' to camp out in the cold.
''(The reaction) makes me feel very foreign. It's really nice, it's really nice, especially after five years.
''They have stuck around, they're still camping out, I respect that.
''It's very, very, very cold and I don't understand what kind of mental disorder you have.''
Stewart, 22, described the end of the saga as ''a trip''.
''This is weird, right? I don't know. I'm so happy that every single bit of the story is done,'' she said.
''Usually we're at one of these premieres going, I don't know, you can't really feel it because you're not done. You're a little desensitised by it all because you have another one coming up.
''This time it's a trip, it is weird.
''Sometimes things don't hit you until you hear about them after.''
Meanwhile Lautner, 20, said the director calling the final cut on his final scene was an emotional moment for all involved.
''It was definitely emotional. My last scene was the slow dance scene between Jacob and Bella.
''It was an emotional time for all of us.''
He also refused to settle the fierce debate among Twi-hards, who divide themselves into ''Team Edward'' and ''Team Jacob'' camps, in reference to the love triangle at the centre of the saga.
Asked if Bella made the right decision, he said: ''To be honest I don't think she could have gone wrong either way - Jacob and Edward couldn't be more different,'' said Lautner.
''So yeah, I think she made the right choice but I don't think she would have made the wrong choice if she went with Jacob.''
Stewart also revealed that it would have been "painful" if the series, based on Stephenie Meyer's books, had not been finished.
"I feel very happy that we got to end it at the end. If we hadn't been able to finish the series, it would have been utterly painful for all three of us. At this point, everything is out, the stories have been told, I'm so proud of everyone I can't even tell you. I feel pretty good," she said.
Amid rumours that the film franchise may extend further, Stewart did not rule out reprising her role.
Asked if she would be involved in any future Twilight films, she said: "Yeah. I can't imagine it but yeah of course."
Twilight: Breaking Dawn Part 2 is released in cinemas on Friday.