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Thankfully she changed out of her too-tight pants from earlier in the day before she hopped on her flight ... we can't imagine how uncomfortable that would have been!

On Tuesday evening Khloe Kardashian arrived at Los Angeles International Airport, and she was headed back to the Hamptons to film her reality spin-off show. While she was in a pretty good mood at LAX, there's a new report out claiming she's become a bit of a diva on set. Say what?!

Ever since filming began, "Khloe has been showing up late for call times, and has offered no explanation for the delay," according to Radar Online. "The crew has been left in the lurch because they can't get any work done until Khloe decides to show up. This is very atypical of Khloe, who previously would often turn up early for shooting!"

The source added, "Khloe has been complaining about being in the Hamptons, and doesn't understand why the locals are so angry about their arrival in town. She is acting like a real diva, and says the Hamptons should be lucky to have her in town, as it's a boost to the local economy."

Hmm, do you believe this?!