Report: Khloe Kardashian's real father is Lionel Richie?!

We're just a bit stunned at the latest report that Khloe Kardashian's biological father is none other than crooner Lionel Richie. Yes, father of Nicole Richie… this is weird with a capital W.

A source told In Touch Weekly that Khloe's mother Kris Jenner, 58, "had a sexual affair" with Lionel, 65, during her marriage to Robert Kardashian Sr.

Lionel was apparently going through a rough patch with then-wife Brenda Harvey at the time.

"Everyone was sleeping around with everyone else back then, and Kris was hot in those days," the source said.

Diary of A Hollywood Street King blogger Jacky Jasper backed up the claim, telling the mag Kris "had an affair with Lionel and I believe he is Khloe's dad".

You only have to look at Lionel's youngest daughter, 16-year-old model Sofia, to see the remarkable likeness with 30-year-old Khloe.

Strangely enough, Sofia is close friends with Khloe's stepsister Kendall Jenner… and the Kardashians and Richies have been family friends for years.

Lionel has three children: Sofia, Nicole (who he adopted when she was two) and 20-year-old Miles Brockman.

If you think it all sounds a bit bizarre, Khloe's with you on that. In response to the new report, Khloe laughed it off and told Gossip Cop: "I've had so many dads my head is spinning LOL."

The reality star has always maintained her father was Rob Kardashian Sr, however, various names have been linked to her paternity, including Rob's pal OJ Simpson and hairdresser Alex Roldan.

In a weirder twist, Khloe joked about having sex with OJ on Chelsea Lately back in March. Was she joking though? We're confused...

So just how hot was Kris Jenner back in the day? Take a look at this #ThrowbackThursday of her '80s music video...

View slideshow: Khloe Kardashian's 30 best TMI moments!