Could Lionel Richie be the biological father that Khloe Kardashian is looking for?

The youngest Kardashian sister has been bombarded by rumours that she is not Rob Kardashian's biological daughter - based on the fact that she looks so dissimilar to sisters Kim and Kourtney.

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And now, according to a new report, Khloe Kardashian’s real father is Lionel Richie, whom her mother Kris Jenner “had a sexual affair” with while she was married to the late Rob Kardashian, Sr.

“[Lionel] was on the outs with his wife at the time,” a source told InTouch.

“Everyone was sleeping around with everyone else back then, and Kris was hot in those days.”

Kris’ old friend Danielle DiCriscio has also said that the momager and Lionel were definitely very flirtatious, even though she was married to Robert Kardashian and he was married to Brenda Harvey.

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She said: “I’ve seen Kris do things that would blow people away.

"I know Lionel was a huge player back then, too.”

Coming just months after claims that OJ Simpson could be Khloe's baby daddy, these latest reports about Kris and Lionel seemingly have more credibility.

And that's all because of the uncanny physical similarities between Khloe and Lionel’s 16-year-old daughter, Sofia Richie.

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One source claimed that the teenager - who is good friends with Kendall and Kylie Jenner - “looks like she could be Khloe’s little sister”.

The source also claimed that Khloe considers Lionel to be “like family” and believes he’s a great father.

They added: “If Lionel is her dad, she’d probably be okay with it. [But it's unlikely] Kris will ever tell Khloe the truth… There’s just too much at stake.”

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The Kardashians have yet to issue a formal statement on the reports.

Khloe, however, joked to Gossip Cop that “I’ve had so many dads my head is spinning."