MTV working to prevent catfight

Reps for Cameron Diaz and Jessica Biel are reportedly working hard to prevent the two Justin Timberlake amours from bumping into each other at the MTV Movie Awards on June 3. "Everyone is determined to keep Cam and Jess apart," says an insider. "It's becoming a big deal because both girls want very separate arrival times. Nobody knows who Cameron is going to bring, if anyone. But if Jessica walks