She Snapchatted the whole thing, but Britney herself caught wind of it on Tuesday night, and you can clearly see all the fan-girling going on.
"Saw your snapchats from the show this weekend @Tinashe You’re sooo cute!!" Britney wrote on Twitter. "Loved them & hope you come back soon!"
Tinashe's response to Spears' tweet?
Tinashe hasn't been shy about her love for the pop legend. At the VMAs, she was gushing about her on the red carpet.
"I've been stanning her since I was, like, five," Tinashe said.
And don't forget about the time that T got out of her car and danced to "Womanizer" while stuck in traffic.
Britney Spears showed her love for that too.
It's safe to say that Tinashe is a little bit in love with Britney.
Watch our interview with Tinashe below: