Robert Pattinson and Kristen Stewart talk Fifty Shades of Grey at Comic-Con
Taking to the stage, Rob and Kristen were welcomed with screams of applause from excited fans, who were given an exclusive, seven-minute preview of the Twilight Breaking Dawn Part 2movieat the event.
Dressed in a neon BCBGMAXAZRIA skirt, a cropped white tee and black hi-top boots, Kristen Stewart was unusually smiley as she sat by Robert Pattinson on the panel, answering questions on the new movie - and its steamy sex scenes.
Speaking of their struggle to maintain a suitable rating during the saucy scenes, filmed with off-screen boyfriend Robert Pattinson, Kristengiggled: 'The ratings, man! [It's] a tricky thing.
'In the second one, we just wanted to be animals. We're not human anymore. How do you do that? We tried, and they told us it was rated R, and we were like [snaps fingers]. So, yeah, I'm going to stop.'
Rob and Kristen were joined at the question session by muscly co-star Taylor Lautner, and on-screen daughter Mackenzie Foy, who plays little Renesmee Cullen.
Also in attendance at the California fan soiree were Cullen Clan members Kellan Lutz, Ashley Greene, Nikki Reed , Peter Facinelli, Elizabeth Reaser and Jackson Rathbone.
During the day Robert Pattinson also opened up on racy novel Fifty Shades of Grey, joking to MTV's Josh Horowitz: 'I would just sit there and lick the pages.'