The 25-year-old Fetish singer hit the stage sporting a strapless, one-piece shiny black ensemble and the two sang her hit song Hands to Myself.
28-year-old Taylor, meanwhile, donned a snakeskin print bodysuit with a matching black sparkly jacket, as the pair danced and jumped around performing together.
Selena told the audience,
I want to say thank you to my best friend of about 12 years, almost 13. And the reason why she has been one of my best friends is because this person has never, ever judged a single decision I’ve made. She’s always met me where I’ve been. She’s encouraged me when I’ve had nothing to be encouraged about. And I don’t know if I would be as strong as I am if I didn’t have you and your family because you changed my life.
She further added,
But honestly thank you from the bottom of my heart for supporting someone that I know that is the most beautiful, strong, independent woman I’ve ever met. So thank you for supporting my best friend.
Taylor also shared a short clip of the duo belting it out while both clad in black sequins.
Check it out.
Before posting the above post, Taylor teased her friend's appearance in her Instagram Stories with footages of them palling around during sound check.
We have a special guest on hand. Ooooh, look who it is! It's me," Selena revealed, showing her face.
We're gonna go sing 'Hands to Myself,' which is a[n] absolutely iconic bop.
Selena chimed in, "Yes, Taylor loves that one and I love her for loving it."
"It's my favorite song", Taylor added.
The reunion comes nearly after three years since the last time the two performed together during Taylor's 1989 World Tour in 2015.