Khloe Kardashian Filmed Beyoncé Knowles' Serenade at Diana Ross's Birthday

Diana Ross, the woman, the myth, the legend: She's just turned 75, and had THE MOST star-studded birthday bash to celebrate. No doubt it was an insanely exclusive invite, judging by the guest list, but luckily we have Khloé Kardashian, who documented everything from the magical night—in a huge blonde wig that has proved controversial, probably in tribute to the singing legend's iconic locks. She even captured video of Beyonce in a surprising, impromptu performance singing happy birthday to Diana.

In the video on Khloé's Instagram Stories, Diana's daughter Tracee Ellis Ross takes the microphone and sounds like she's just given a speech celebrating her awesome mom. She exclaims: "Beyoncé? Are you still here? Do you want to sing 'Happy Birthday?' Come on down!"

So apparently Beyoncé didn't know she might have to sing?? (She might also have been given an advance heads up—hopefully.) I have MAJOR stage fright singing in front of people anyways, so being asked to sing off the cuff in front of hundreds of famous puddle might literally cause me to drop into a little watery puddle on the floor. But of course, Beyonce killed it.

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Watch full video here:

You can go here for the video; There are technically two videos from different angles (one looks like it was taken by another guest), and the footage is a bit grainy, but of course Beyonce's voice sounds smashing as usual.

Here's Khloé's huge blonde wig, in case you're curious:

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And here's a still from the video:

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Khloé also took some glamour shots with sister Kourtney from the night:

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And later Diana HERSELF took to the stage to perform in front of an adoring crowd of thousands:

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Khloé: Doing a public service by sharing Ms. Ross AND Beyonce with the world.

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Katherine’s a contributing syndications editor at Marie Claire who covers fashion, culture, and lifestyle. In her role, she writes stories that are syndicated by MSN and other outlets. She’s been a full-time freelancer for over a decade and has had roles with Cosmopolitan (where she covered lifestyle, culture, and fashion SEO content) and Bustle (where she was their movies and culture writer). She has bylines in New York Times, Parents, InStyle, Refinery29, and elsewhere. Her work has also been syndicated by ELLE, Harper’s Bazaar, Seventeen, Good Housekeeping, and Women’s Health, among others. In addition to her stories reaching millions of readers, content she's written and edited has qualified for a Bell Ringer Award and received a Communicator Award.

Katherine has a BA in English and art history from the University of Notre Dame and an MA in art business from the Sotheby's Institute of Art (with a focus on marketing/communications). She covers a wide breadth of topics: she's written about how to find the very best petite jeans, how sustainable travel has found its footing on Instagram, and what it's like to be a professional advice-giver in the modern world. Her personal essays have run the gamut from learning to dress as a queer woman to navigating food allergies as a mom. She also has deep knowledge of SEO/EATT, affiliate revenue, commerce, and social media; she regularly edits the work of other writers. She speaks at writing-related events and podcasts about freelancing and journalism, mentors students and other new writers, and consults on coursework. Currently, Katherine lives in Boston with her husband and two kids, and you can follow her on Instagram. If you're wondering about her last name, it’s “I go to dinner,” not “Her huge ego,” but she responds to both.