By Ann Clark



Moving on from jailed ex-boyfriend Raffaello Follieri, Anne Hathaway told PEOPLE she is crushing on a new mystery man.

"This guy I know in L.A. is kind of doing it for me right now," the actress told PEOPLE at the London premiere for her newest movie, Rachel Getting Married. "When I think of sexy, I think of him."

"You know when sometimes you don't know someone very well – you'll probably never see them again – but you just meet them and you're like 'WOW, you really have it going on'?"

But the actress cautions that things haven't gotten serious yet. "I'm totally single right now," says Hathaway, who wore a blue Zac Posen gown and Bulgari jewels to the premiere, which was part of the BFI 52nd London Film Festival. "But I happened to meet a sexy guy the other day."

Hathaway's due to spend time with another sexy guy – Johnny Depp – as filming starts for Tim Burton's upcoming film, Alice in Wonderland, in which she plays the role of the White Queen.

Is she excited to work with Depp? "Uh, yeah, ya think?" Hathaway, 25, told PEOPLE. "I hope I don't faint. I'm wearing a corset which is difficult enough, but then to have to wear a corset and be short-breathed around Johnny Depp?"

And her friends are buzzing with excitement at her upcoming costar. "I have so many people coming out of the woodwork who really have never wanted to visit me on the set before just want to kind of come and hang out," she says. "Everyone just wants to meet Johnny.

"It might be my hardest role to date – to keep my cool."

Meanwhile, Hathaway's ex Follieri, who pleaded guilty last month to wire fraud, money laundering and conspiracy, is preparing for his Oct. 23 sentencing.

Prosecutors said Monday, the Associated Press reports, that they urged the judge not to show leniency after learning that Follieri sent the judge a photo of himself and the pope in hopes of reducing his prison sentence.

Follieri agreed to four-plus years in prison during his guilty plea but last week his lawyers requested a three-year sentence instead.