The Keeping Up With The Kardashians star, 31, has remained out of the spotlight since 13 October, when estranged husband Lamar was found unresponsive at a Nevada brothel.
Khloe was by his bedside in Las Vegas that night. Lamar's now been transferred to a hospital in Los Angeles, where Khloe has also been keeping a vigil.
According to E! News, however, she has now left Los Angeles to fly to Texas and watch basketball player James in action in the Houston Rockets versus Denver Nuggets game.
People at the game - including an The AP journalist - tweeted about her appearance.
Oh. In case you're wondering. Khloe Kardashian was at the #Rockets game tonight.— Rockets Insider (@Rockets_Insider) October 29, 2015
Khloe and Lamar split in 2013 but the divorce papers were withdrawn after Lamar's collapse. Some outlets have suggested this was to ensure Khloe, his legal wife, continued to make his medical decisions.
She had been dating NBA star James since summer.
In a recent interview with People magazine, she said: "James has been great with me. I'm just allowing everything to unfold. If it's ever too overwhelming, [for James] then I understand that as well."
She also clarified that withdrawing divorce papers did not mean she was back with Lamar. "There are too many other important things, too many medical things. It's not even in our brains thinking about us as a couple or having a relationship right now."
A source added to E! News: "Khloe and James never broke up. He's been so understanding and he knows that Khloe's love for Lamar is deeper than what most people can understand. He's been very understanding and supportive."
Why is Khloe famous?
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