"THIS IS A NEW BETTER VERSION WITH LESS OF THAT UNBEARABLE SCREAMING!" writes the groom's sister, Shirin Rajaee, on YouTube.
"Some of the groomsmen flew in from across the country and had to learn the routine last minute and via video tutorial," she explains. "The bride, Ariana, was in shock and so were all the guests."
We're not surprised. Sean Rajaee and friends, we salute you. Not least for your Beyonce impressions.