Getty Images; AKM-GSIRihanna was greeted with roars of cheers when she came out and surprised everyone during Calvin Harris' set at the 2016 Coachella Music Festival on Sunday night...but one superfan really stood out from the rest: Taylor Swift.
The 26-year-old just couldn't help herself from totally fangirling in the moment, taking to Instagram to post a video that captured her excitement.
"I'll NEVER forget this moment," she captioned the video, which featured her and several of her famous pals (including Lorde) singing along to Rih's "We Found Love."
In the video, Swift captures the bad gal singing on stage before turning the camera onto her bleached blonde self and singing and dancing along to the hit.
Meanwhile, Rih looked very festival-ready on stage, donning a red, white and blue fringe jacket over a crop top with braids, ripped jeans and a hat.
Before her surprise show, Rihanna was spotted having a great time at the festival throughout the weekend.
In fact, she was photographed getting cozy with Leonardo DiCaprio at one point, both whispering into one anothers' ear as they hung out at the Neon Carnival—a star-studded after-hours party during the festival.
The two tried to go incognito as the 41-year-old Oscar winner wore dark aviator sunglasses, a baseball cap and a handkerchief tied around his neck, while the 28-year-old singer sported silver sparkling sunglasses.