Khloe Kardashian's DNA has come into questions as rumors swirled last week that Robert Kardashian, Sr. was not her biological father. The rumor mill began churning when Robert's ex-wife and widow both claimed he was not Khloe's real father.

Khloe is not his kid -- he told me that after we got married, Jan Ashley, 63, the woman who married Robert after Kris Jenner, told Star magazine. He just kind of looked at me and said [it] like it was a matter of fact. He said, 'Well, you know that Khloe's not really a Kardashian, don't you?' And I said...'OK,' and that was it.

Some speculated OJ Simpson is her real father and Sirius XM Satellite personality Gregg Opie Hughes of The Opie & Anthony Show even offered the reality star $250,000 to take a paternity test.

Now, others speculate her biological father is not OJ Simpson, but another man.

According to rumors, Kris Jenner's hairdresser Alex Roldan is Khloe's real father, reported GlobalGrind.com. Photos of Roldan have been circulating on the Internet and many have commented on the striking resemblance between him and Khloe.

FOX News cited that multiple gossip sites have reported the same information including Zap 2 it, BlindGossip.com andHollywoodite.com.

The Web site BlindGossip.com posted the photos of Roldan, including this paragraph: Meet Alex Roldan, Kris Jenner's hairdresser. This is Khloe Kardashian's biological father. He worked on a music video that Kris Kardashian did for her 30th birthday called 'I Love My Friends.' Alex is now a hairdresser in West Hollywood. While Robert Kardashian was only 5'7″ tall, Alex is a much larger man, standing approximately six feet tall. BTW, Khloe's middle name is Alexandra.

Hollwoodite reported that the Kardashians are aware of the news and were planning on revealing Khloe's real father on an episode of Keeping Up with the Kardashians, reported FOX News.

However, when reports first broke that Robert Kardashian, Sr. was not Khloe's real father, the Kardashians publicly scoffed at the news.

It makes sense now! Kim Kardashian tweeted. Khloe, u are so tan!

Thanks for all your love and support today dolls! Kris Jenner wrote. Wow some of the stories out there today are either fabricated, or SO 24 years ago!!

Even Khloe responded. Do the rumors ever stop? she said. What is the recent obsession with all of this? What are they going to say next? #SoapOpera.