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Kim Talks Marriage, Kourtney Disses Kris Humphries, on "Letterman"

Stuart Wilson/Getty Images(NEW YORK) -- Kim and Kourtney Kardashian appeared on the Late Show with David Letterman Wednesday evening, and not surprisingly, Kim's marriage to Kris Humphries and her new pregnancy with Kanye West's baby took center stage.

On her mega-hyped marriage, Kim told Letterman he and other comics need to stop poking fun at her brief marriage -- because she's technically still married.

"Those jokes really can't work, because I've really been married for almost two years.  So, it hasn't been 72 days, it's been almost two years, so those jokes have to stop," she said.

The couple isn't divorced, because Humphries wants an annulment, claiming Kim committed fraud, tying the knot only to reap the rewards of a reality ratings bonanza.

Kourtney was quick to jump in, sniping, "...If she was going to do it for publicity, she'd pick someone that people knew."

As for her baby-to-be, Kim said the due date is in July, and while she doesn't yet know the sex, she's "dying to find out."

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