"I have one problem with Elle," admitted Stephen Dorff of his "Somewhere" co-star, 12-year-old burgeoning "it" girl Elle Fanning.

"She's nearly perfect, but she's just growing too tall. I'm not the tallest guy, and she's like 6 feet tall in heels, so it feels like the time I went out with a supermodel (Milla Jovovich) years ago," said Dorff, who was wearing Tom Ford. "I feel like Mini-Me sometimes on the red carpet with her."

Of course, at last night's screening of Sofia Coppola's film at the Tribeca Grand, Fanning's 5-inch Nicholas Kirkwood for Rodarte wedges probably didn't help her cause with Dorff.

"I was asking Elle, 'How are you losing your baby teeth now? You're already so tall?'" Dorff continued. "She said, 'I know, but I can't slow down!'"

Fanning (whose sister, Dakota, 16, is another young starlet) is taking it in stride. While others might get a big head about joining the ranks of Coppola's other leading ladies like Scarlett Johansson or Kirsten Dunst (who was at the screening), Fanning's charming youthfulness is winning her rave reviews across the board.

Like her sister before her, the fashion world has embraced the younger Fanning; her ensemble for the screening was custom-created by Rodarte designers Kate and Laura Mulleavy. "They made this for me, which was just incredible!" raved Fanning of her gold minidress.

"I love them so much. I did a magazine shoot with them that was all their clothes, and after that I just appeared in a little short movie for their Spring 2011 collection." Step aside, Tavi -- we sense a new muse!

Molly Shannon, Parker Posey, Anna Sui, and James Franco and Marina Abramovic (who arrived together) took their seats in the theater for the film, which follows Chateau Marmont-living movie star Dorff as he embraces his newfound role as a father to Fanning. Dorff prepared for the role by picking up Fanning from school, attending her volleyball games, and taking her on Pinkberry and Color Me Mine dates.

"I might have been a little homesick about American culture," said Coppola, dressed in Louis Vuitton, of the film's third major character: Los Angeles. "I was living in Paris after 'Marie Antoinette,' and I always like to write about some place distant from where I am. When I was in L.A., I wrote about Japan and France (in 'Lost in Translation' and 'Marie Antoinette,' respectively), so I like having that distance. There were a lot of stories in the tabloids about successful movie star guys, so I was thinking about that world, and seeing pictures of the Chateau Marmont made me think of when I had lived there."

Of course, the evening's New York audience invited the question: Would Coppola ever make a movie about the Big Apple? "I'd probably have to live further away!"