BAFTA LA Behind Closed Doors With Carey MulliganStars, they're just like us -- sometimes they embarrass themselves with gushing fan mail to celebrities. Carey Mulligan is a very proper-sounding 30-year-old Brit married to Marcus Mumford of Mumford & Sons, but she has love for a certain Detroit rapper in her heart.

Carey was just on "The Late Late Show" to promote "Suffragette," and the topic turned to fan clubs. She told James Corden she was never in any fan clubs, although she used to like race car drivers, she just never wrote to them. However, she said, "I did write to Eminem once." James gasped and said, "You're Stan! You're who 'Stan' was based on! This is a huge exclusive."

Haha. Not really. Here's what Carey did:

I'd seen '8 Mile' and I was just really blown away. I was like 16, and I wrote to him. I was like, 'Mr. Eminem... I just want to thank you for your contribution' or something. It was really earnest! 'For the work you've given the world,' you know that kind of thing."

She said Eminem never wrote back, which is sad, but considering the amount of mail celebs get it's not surprising. Christoph Waltz, a fellow guest on "The Late Late Show," wanted to know "contribution to what?" Apparently he's not a big Eminem follower. Another guest, Johnny Galecki, said he wrote a fan letter once to Nikki Sixx of Motley Crue.

Full disclosure: I once wrote to Ethan Hawke and his grandmother wrote back from Texas. Nowadays young'uns probably just tweet to their faves -- or they avoid celeb stalking all together, which is the more mature thing to do.

Here's Carey sharing her story:

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