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Kim Kardashian is the latest family member to come to her sister's defense after a Star magazine report alleged that Khloé Kardashian Odom is not the biological daughter of late attorney Robert Kardashian.

So just what did the E! reality star have to say when asked about the subject—namely, if Khloé really is just her half-sister?

"Absolutely not!" Kim told E! News as she made her way out of a Beverly Hills hair salon on Wednesday. "Ridiculously false."

Her answer came just hours after family matriarch Kris Jenner insisted the rumor is "stupid" and "silly."

Khloé herself also angrily addressed the speculaton earlier in the day via Twitter, calling her father's two former wives "disgusting" for making such a claim.

In addition, E! News obtained a document that reveals Robert Kardashian had stated under oath that he indeed had "four biological children."

Meanwhile, on Wednesday night, Kim was named Favorite TV Celebreality Star at the 2012 People's Choice Awards.

"Thank you to all the fans for always being supportive and for voting for me," she told us exclusively. "It means more than you know."

—Reporting by Daniel Ramos