Kristen Stewart arrives to sneak preview of Twilight at the filming of MTV's Spoiler in Beverly Hills.
According to a source, Pattinson, 26, will attend the show alone.
"Bosses were hoping that Kristen and Robert would be surprise guests before this scandal blew up. The idea was for them to jointly present awards...but that has been changed," mirror.co.uk quoted a source as saying.
This would have been their first appearance in public since they parted ways after Stewart's fling with "Snow White and the Huntsman" director Rupert Sanders surfaced.