UPDATE: Added transcript of Kristen's interview :)

"They should do it as a straight-up porn film. That would be so good..." chuckels Robert Pattinson, speculating on a potential - but rather less chaste - future reboot of Twilight. While he may be joking about new beginnings, the billion-dollar vampire franchise is at its end with The Twilight Saga: Breaking Dawn - Part 2 (to give it its full title) and Pattinson is on his final round of press-junket interviews about the monster hit which has catapulted himself and co-stars Kristen Stewart and Taylor Lautner to Hollywood megastardom.

Wether Twi-hard or Twi-hater, there's no denying the impact of the films adapted from Stephenie Meyer's quartet of novels about clumsy teen Bella, her pretty-boy vampire beau Edward and werewolf loser-in-love, Jacob. Attracting a rabid fanbase, the films also fueled a craze for bloodsucking TV Dramas like True Blood and The Vampire Diaries and a slew of copycat books. Even this year's bestselling erotic novel, Fifty Shades of Grey, began life as Twilight fan fiction...

But the franchise's real lasting legacy might just turn out to be its three young who have made millions from the saga. Pattinson (26), Stewart (22) and Lautner (20) even made Forbes magazine's list of the highest-paid entertainers under the age of 30.

Today Lautner's tipically cheerful and straightfoward, while the self-effacing Pattinson greets Total Film in a hotel room surrounded by bottles of Vitamin Water, after overdosing on coffee. Sporting an anti-Edward backwards baseball cap, he's still stubbornly down-to-earth and remarkably unnafected by Twilight hyperbole as he was when TF first talked with him, four years ago "I was afraid I'd kept talking about myself," he explains putting away an electronic cigarette. "So I put an effort into forcing myself to be interested in other people, even if you're struggling to come to terms with what your life is."


Kristen's Full Interview

What advice would you give to your younger self on the first day of filming Twilight?


Kristen Stewart: I would say: 'Stick to your guns on not smiling inTwilight. Angst is much better than bubbles, because it really works and everyone is about to be proved wrong.' All the scenes were so serious. They're dealing with really heavy stuff. [The filmmakers] were like, 'Maybe you can lighten things up? And I'm like, 'No you can't take that away. 'That's what people are addicted to- the rawness. Also, I would say: 'Things wind up OK for you in five years. You're pretty happy so just chill out. Relax, Kristen.'

What are your most memorable moments of the Twilight Franchise?

KS: Filming the wedding was very cathartic. I remember sitting in this elaborate wedding dress, wrapped up in a raincoat in a dingy, dirty garage with the whole cast sitting there trying not to be cold, realizing this is probably going to be the last time everybody was there to hang out. Also, at the beginning, meeting Rob and Taylor. I remember both moments. Big experiences.

How do you think the saga has changed you as an actress?

KS: Acting in the films has opened me up. I was more locked when I was younger. To play Bella in a really honest way is to show she wears her heart on her sleeve. I only have my heart and my awkwardness to show. It was interesting to watch. Some people hate it. But I'm proud of it.

In what ways has Robert changed since the franchise began?

KS: Rob is so ridiculously ambitious. I see the drive and its only starting… especially right now because this is all coming to an end. I guess its not a change, its just something thats come out and developed.

Is it sad or liberating to be finishing Twilight?

KS: Both. Fleetingly sad and maybe then once or twice after. Like when you suddenly smell something that reminds you of being on set. But its not sad in between those moments, because I feel like no stone was left unturned. Everyone things it's hard to say goodbye, but its harder to say goodbye to crews and casts that I've only spent five weeks with. This was four years. Im ready to say goodbye. Im perfectly fine. Once the story has been told, you feel like you've done all you can do. It's pretty easy to walk away. It's not like its going anywhere.


Rob's full interview

What advice would you give to your younger self on the first day of Twilight?

Robert Pattinson: On literally the first take of the first scene, I had to run over and pick up Kristen. And I almost tore my arse-cheek muscle, my glute, because I crouched down wrong. So I’d say: ‘Don’t squat down so low’.

How was the Twilight experience changed you?
RP: I’m probably more insecure. My ego got smaller [laughs]. I thought I was pretty cool after the first one. I finished the movie and for the first time, I had some money. The Twilight trailer had come out and got eight million hits so I had all the best parts of being in a big movie. I had meetings were people were saying, ‘This is the new hot thing, eh?’ Everyone gave a shit about you, but no-one knew who you were outside of that. So I spent eight months getting wasted with everyone thinking I was great. It was really fun. It was different at the start. TMZ and all that stuff was getting prevalent and now, it’s insane. Becoming big now, you became insanely conservative. Terrified about everything. Now I just stay at home.

Did you keep any mementoes from the films?
RP: The first one, I kept pretty much the whole wardrobe because I didn’t have any clothes then. There was an interview I did – with MTV or something – with a superfan. I was supposed to go in and surprise her, and after 10 seconds, she was like, ‘Are you wearing the same outfit as Edward?’ I’d completely forgotten, but they were the same clothes!

Kristen describes you as being ‘ridiculously ambitious’. Is that true?
RP: I think I want to be…The difference between me and Kristen is that she can do a day of work and at the end of the day be like,’I did the absolute best I could. Satisfied.’ Whereas I don’t think I’ve ever had that day in my life. I always go home irritated and want to fix it the next day. I don’t know who has the bigger ego in that case. Whether hers is bigger because she thinks what she did is fine, or whether mine’s bigger because I think I’m so great it’s never going to be good enough.

What has the franchise done for you career in general?
RP: It’s done a lot. But the same time, you have to steer it. You can sink just as quickly as someone who’s never had this. It’s not a free pass. I think about how to carefully plan the route afterwards. You can’t do anything you want. And if I ever stop acting, I want people to remember my stuff as interesting after I got given my break.

Kristen’s interview –talks about Rob.

In what ways has Robert changed since the franchise began?
Kristen Stewart: Rob is ridiculously ambitious. I see this drive and it’s only starting…especially right now because this is all coming to an end. I guess it’s not a change, it’s just something that’s come out and developed

Taylor mentions Rob and Kristen on his interview

How have you changed since the franchise began?