EXCLUSIVE: Kathy Griffin Dishes on Biggest Celebrity Enemies, Praises Neighbor Kim Kardashian's Sense of Humor

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Kathy Griffin chatted exclusively to ET before Kanye West's hospitalization on Monday, raving about the rapper's wife, Kim Kardashian, as a "quiet and respectful" neighbor.

"We live next door to each other," Griffin told us in a sit-down at Mama Shelter Hollywood, revealing that she spoke to Kardashian after her terrifying Paris robbery. "She's doing fine. The last thing Kim Kardashian actually said to me was -- because I warned her, 'Just so you know, we might get along but you're never out of the act' -- and she's just like, 'I get it. It's an honor.' I was like, 'Good girl.'"

WATCH: Kim Kardashian 'Terrified' After Kanye West's Hospitalization: He 'Hasn't Been Himself in a While'

"I think she was counting her money while she said it, so she was distracted," Griffin joked.

The 56-year-old comedian's in-your-face attitude has earned her legions of fans and a reported $20 million net worth. Faithful followers can recite the jokes about celebrities that she tells in her stand-up act, but her new book, Kathy Griffin's Celebrity Run-Ins: My A-Z Index, details the interactions that are left out of her routine.

"One of them, for example, is two weeks ago my good friend, Sidney Poitier, came over to dinner," Griffin said. "Not funny. Not appropriate for my act, but who thinks I'm friends with Sidney, right?"

In her years of poking fun at Hollywood's biggest stars, Griffin has gotten very familiar with who can take a joke and who can't. The celebs she seems to like the most include Leonardo DiCaprio and Miley Cyrus.

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"I was presenting at the Directors Guild of America, but Leo made the mistake of just scrolling on the Twitter," Griffin said. "Basically, I lovingly tortured Leonardo DiCaprio. I believe I called him a man whore from the stage ... That's when I fell in love with him. I love a hot guy who can take a joke."

Cyrus apparently just needed clarification that all of Griffin's jabs were in jest.

"She goes, 'So this whole time you've just been kidding?'" Griffin recalled. "And I go, 'Yeah, this whole time, babe. I'm just a comic. I'm just kidding.' We've been cool ever since."

Griffin's naughty list tends to be a bit longer and includes Ashton Kutcher, Taylor Swift and Demi Lovato.

According to Griffin, Kutcher refused to speak to her at a charity event after she made this joke: "Ashton Kutcher released a statement saying marriage is one of the most difficult things in the world. Really? I would say fighting cancer is."

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Likewise, Swift gave her the cold shoulder at a GRAMMY party.

"I really was trying to make her laugh!" Griffin said.

But Griffin rates Lovato fans the worst.

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"The Lovatics were printing pictures of my home, where I go for a walk every day ... They really went for it," she said. "But let me tell you what I learned from the Demi Lovato experience, and I'm not saying it was a good lesson. It really taught me, 'Oh no! Now I'm going harder.'"

And that's just what fans can expect when she kicks off her 50-city comedy tour in January. Kathy Griffin's Celebrity Run-Ins: My A-Z Index is available wherever books are sold.