Robert Pattinson, Taylor Lautner, Kristen Stewart and other cast members walked the red carpet and signed autographs.
"Twilight" fans from around the world camped out in front of the Nokia Theatre in downtown Los Angeles for a chance to see them.
The fans received wrist bands to secure a spot on the bleachers for the star-studded red carpet event.
They were asked to leave the campsite by 6 a.m. Monday so that crews could roll out the red carpet and set up the bleachers.
Khay McBride, 40, who took a bus from San Francisco and had been sleeping on nothing but a blanket since Wednesday, said camping out has been worth it.
"I didn't know what to expect. I just showed up, and it's been the best thing I've done. I love it," McBride said.
Stewart said she feels the energy every time she meets with fans.
"To be able to connect with thousands of people... there's really no difference between us," Stewart said. "It's just like, 'How cool is this, guys?'"
Lautner said he feeds off the energy of the crowd.
"It builds us up," he said. "It gets us that much more excited to show the movie to everyone. They're our motivation."
"The Twilight Saga: Breaking Dawn - Part 1" hits theaters Nov. 18.