The reality star was oblivious to her surroundings as she headed into her private Los Angeles gym on Tuesday.
And little wonder - the outing came as yet more outrageous allegations about her father's parentage emerged.
Something on her mind? Khloe Kardashian looks
preoccupied as she arrives at her private gym in Los Angeles talking
intently into her mobile phone on Tuesday
Plenty to talk about: The outing came as yet
more allegations were made as to Khloe's parentage; this time her father
Robert's friend O.J. Simpson was named a potential father
This time O.J. Simpson's manager spoke out to claim the jailed American Football star could be Khloe's father.'It’s all going to come out sooner or later,' Norman Pardo tells In Touch magazine. 'Khloe could be O.J.’s kid.'
However Pardo's allegations owe more to a hunch than any inside knowledge.
While Kris and her then-husband Robert Kardashian were close to the Simpsons, this is the first time OJ has been named as a potential father to Khloe.
But Pardo claimed: 'They all took their vacations together. There was a lot of partying going on back then. Kris cheated on Robert — she was known for having a good time.'
Kardashian also served as a member of Simpson's 'Dream Team' as his attorney in the famous 1995 murder trial.
While Kris Jenner has openly admitted cheating on her former husband, she has always strongly denied any suggestion that Robert was not her daughter's father.
'I have never heard such crap in my life,' she told GMA in 2012.
'I was there, right. I gave birth, I know who the dad was. Everything’s good. We’re all good. It’s the family joke because Khloe was blond and not dark-haired.
'People just … get a life.'
And Khloe, 29, has been even more indignant about the 'disgusting' reports, which she brands an insult to her late father.
Following previous speculation as to her parentage, she blasted Robert's ex-wives Jan Ashley and Ellen Pierson.
Keeping busy: Khloe is a regular gym goer, and has been showing off a toned new figure in recent months
'The
audacity you have to mention my father’s name like this! Should be
ashamed of urself! I let a lot of things slide but this one is really
low… YOU ARE DISGUSTING! (yes you know who YOU are)' she tweeted last
year.But while Khloe has slammed the allegation she has herself questioned if she was adopted on the family's reality TV show. Viewers of Keeping Up With The Kardashians did see her question who her parents were in an episode in 2009.
The reality star wanted to prove she was not adopted and tested the maternity of her mother Kris Jenner.
Khloe Kardashian's representative did not immediately respond to a request for comment.
Claims: Two of Robert Kardashian's ex-wives have
come forward claiming the lawyer told them Khloe Kardashian, left, was
not his real daughter, like older sisters Kim and Kourtney
