I thought they had already covered that when Khloe wanted to do a paternity test but ultimately decided against it?

They did but Khloe didn't want to get it done but Kris made it clear Khloe isn't OJ's daughter

they did it sis

I thought OJ was meant to be her father

they have...they did a whole episode on it & they sought out a doctor to do the paternity test but Khloe ultimately decided against it

Khloe doesn't wanna face the truth, but when life hands you oranges, make OJ.

They have addressed it, and if you saw the episode it's pretty obvious OJ isn't her dad.

Is Alex the guy Kris had an affair with?

That guy and Khloe took a photo together can't be bothered linking, and if he was her real father then it would be in the media and they wouldn't have moved on. She doesn't look like Robert, but she does look like Kris. Maybe on Kris' side they had light hair etc

What was her reasoning for not doing it again??

Kris is half Scottish, her mother is fair skinned.. Kourtney and Kim got the darker Armenian genes while Khloe got lighter genes.

This makes so much sense. I always wondered why Khloé looks so different than Kim and Kourtney.