Khloe Kardashian's mom said on Thursday that a tabloid story that said Khloe was not a Kardashian was "crap".

"I gave birth. I know who the dad was," Khloe's mom Kris Jenner said on Good Morning America.

The rumors began after the second wife of Robert Kardashian, Jan Ashley, said Khloe was not Robert's kid, reports Star Magazine.

The third wife of Robert also said Khloe wasn't his child.

"She looked nothing like the rest. She was tall, had a different shape, light hair, curly hair. Didn't look anything like the other three children," the third wife, Ellen Kardashian said.

"The audacity you have to mention my father's name like this! Should be ashamed of urself! I let a lot of things side but this one is really low...YOU ARE DISGUSTING! (yes you know who YOU are)," Khloe said on Twitter Wednesday.

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Khloe Kardashian