Usher serenades Kim Kardashian during Las Vegas residency.

The Kardashians had hoped to celebrate her 42nd birthday in October by attending Usher's Las Vegas residency show,

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but inclement weather at the time derailed their plans. She was able to travel to Sin City, though, six months later on Saturday to see Usher perform.

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She was joined by her hairstylist Chris Appleton and his fiance, Lucas Gage, as well as Chris Appleton.

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The most exciting moment for Kardashian, though, was when Usher stopped singing "Superstar" to acknowledge her.

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Kardashian reportedly loved the show so much that she promised to return soon on her Instagram Story.

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Kardashian had previously shared on social media in October the unfortunate circumstances...

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...that prevented her from attending the show as well as a lavish dinner at Carbone in Las Vegas: The SKIMS billionaire explained,

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