Handlers for both Jessica Biel, Cameron Diaz, and the MTV Movie Awards staff are worried about the potential for a huge blowout between the two girls… of course, over Justin Timberlake.  Cameron & Jessica Biel are both scheduled to present awards on Sunday night, and Justin’s nominated for his performance in Alpha Dog.  Will Justin and Jessica show up as a couple?  Will Cameron bring a date (her new magician boyfriend Criss Angel)? 

According to Female First, “Cameron is used to being more high-profile than Jessica. But now that Jessica’s dating Justin, she has more leverage. Cameron’s looking a little unstable lately.”

This should be goooood!!!  I love Jess & Justin together…  It’s going to make her so much more famous… Pretty soon, she’ll be the “Jessica” we’re talking about when we just say “Jessica” – not Jessica Simpson.