Kendall Jenner seemed to have quite the weekend at the Cannes Film Festival.
Wearing a sleeveless purple Calvin Klein gown, Kendall Jenner was all smiles as she was captured talking, giggling, and even whispering with Rita Ora at the amfAR 22nd Cinema Against AIDS Gala event.
Rita Ora just happens to be Rob Kardashian's ex-girlfriend.
If you recall, which Kendall Jenner must not, Rob Kardashian had a serious reaction to their breakup back in 2012. He claimed that Ora slept with "20 dudes", one of which was actor Jonah Hill.
An insider told Us Weekly after the breakup, "Rita spent the night with Jonah during a trip to New York."
But that memory seemed to be lost to Kendall Jenner as the pair of them laughed the night away.
Of course, that night Rita Ora could relax a little since it was her ex's sister, Kendall Jenner, not Rob, himself.
She wasn't so lucky at the Billboard Music Awards, where she reportedly had to hide and duck to avoid her other ex, Calvin Harris, who was on the arm of Taylor Swift.
A source told the Mirror, "Rita was backstage the whole night to avoid Calvin and Taylor. The romance is big news -- she wanted to avoid an awkward encounter or being pictured reacting."
The source continued, "Taylor was introducing all her mates to Calvin by his real name, Adam, telling everyone how happy they were."
The source added, "There's no love lost between them."
That's the problem with dating in Hollywood, I guess. Kendall Jenner is young, but the day might come when Rob Kardashian will be at a party chatting up one of her ex-boyfriends from a nasty breakup.
Perhaps then Kendall Jenner will appreciate the pain she could have caused Rob. What do you think about Kendall Jenner whispering and giggling with the woman who caused her half-brother so much heartache?