Drama at the MTV Movie Awards: Cameron and Jessica!

Handlers are working overtime to prevent any drama between Cameron Diaz and Jessica Biel at the June 3 MTV Movie Awards, where the dueling divas will meet for the first time since their Golden Globe dust-up last winter. In January, Page Six reported that Diaz "blew up" at her then-recent ex, Justin Timberlake, when she spotted him flirting with his now-girlfriend Biel at an after-party at the Beverly Hills Hotel. This Sunday, the love triangle will reunite for the first time since the incident - on live TV.

Sources revealed that Diaz and Biel are both presenting awards at the ceremony, while Timberlake is nominated for best breakthrough performance for his role in "Alpha Dog." "Everyone is determined to keep Cam and Jess far apart," said our insider. And Timberlake isn't helping by keeping mum as to how he'll walk the carpet, solo or with Biel. "It's becoming a big deal because the girls both want very separate arrival times," said our source. "Nobody knows who Cameron is going to bring, if anyone. But if Jessica walks with Justin, Cameron will want to bring a date. If Jessica goes alone, Cam will probably walk alone. It's a mess."

The biggest stars are usually the last to walk the carpet - a position both glam gals are fighting to snag. Diaz, who is accustomed to being at the top of the A-list, wants to avoid the "humiliation" of having an earlier arrival time than Biel at the MTV event. "Cam is used to being more high-profile than Jessica," said the source. "But now that Jessica's dating Justin, she has more leverage. Cameron's looking a little unstable lately." The ceremony is also being carefully crafted to avoid a run-in because Diaz was nominated in the best-kiss category (for her lip lock with Jude Law in "The Holiday"). "Jessica is definitely not presenting that one," laughed our source.

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