It looks like Taylor Swift may have learned a thing or two about girl power from the Spice Girls. Just 24 hours after bringing Fifth Harmony out on stage during her 1989 World Tour, the self-described feminist pop star invited yet another bubbly girl group to perform with her during her two-day tour stop in Santa Clara, California. The four stylish special guests? None other than chart-topping British girl group and U.K. X Factor winners Little Mix!

Joining Taylor on stage, Perrie, Jesy, Leigh-Anne, and Jade teamed up with the "Bad Blood" singer for a special, bouncy rendition of the girls' enchanting U.K. No. 1 hit single "Black Magic." And of course, Tay looked right at home as the unofficial fifth member of Little Mix, dancing, singing along, and strutting down the catwalk with the other girls to create a truly magical moment. Watch below:

Afterwards, Taylor went about her usual post-show ritual of gushing over her special tour guests, sharing on Twitter, "LITTLE MIX!! Love these girls!! They smashed it tonight in front of 50,000 screaming fans. Amazing."

In no time, Little Mix returned the favor on their Instagram account with a lengthy, excited thank-you message:

"OMG cannot quite believe what's just happened, one of the best experiences in our little mix life ever! Cannot thank Taylor enough for having us tonight, 60,000 incredible screaming swifties with a sprinkle of Black Magic, thank you for being so welcoming to us! We love you Taylor can't wait to catch up very soon! xx Little Mix xx"

We're loving all this girl power! And who knows, in light of all those rumors of a Spice Girls reunion, maybe Taylor can be the one to make it happen just in time for a "Wannabe" duet. (Taylor Swift: Swiftie Spice?)

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