"Robert! Robert! Robert!" screamed thousands of fans.
Pattinson spent an hour, nonstop, signing autographs and posing for pictures. When someone asked about the movie's plot, Pattinson sounded more like one of those presidential hopefuls having a brain freeze.
"Kind of reinvented this crazy story lines to end all the previous, uh... What am I talking about? I'm talking nonsense here," said Pattinson.
Maybe Pattinson was thrown off by the deafening screams. A bodyguard even had to put his fingers in his ears.
Pattinson was joined by his co-star and real-life girlfriend Kristen Stewart, wearing a blue sequined gown slit up to her leg.
Stewart got tired of wearing her platform pumps and quietly switched into some more comfortable sneakers.
There were some celebrity fans there too. Jennifer Love Hewitt looked amazing in an emerald green gown.
Heather Locklear and daughter Ava, and even Rob Lowe even attended the premiere.
But the screams were definitely for Hollywood's sexiest screen vampire!