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Taylor Swift Continues Her Plan For World Dominance, This Time With Help From Little Mix

#squads on #squads on #squads

Day after day, week after week, Taylor Swift never ceases to amaze us. Her 1989 World Tour has been an incredible spectacle in its own right, but it's how she has allowed other artists to share the stage that's made it absolutely unforgettable.

Two nights ago (August 14), in Santa Clara, Calif., it was Fifth Harmony. And last night (August 15), for night two of her stay at Levi's Stadium, Tay called out Little Mix for a #squad-tastic rendition of "Black Magic."

Side note: Every time she has a new guest up on stage, Tay always tweets out her appreciation for them being there after the show ends. That's classy AF.

But the Little Mix ladies weren't the only ones to pop up at Levi's Stadium last night. Tay also welcomed two women she called her "heroes" onstage during "Style" and kind of blew everyone's minds -- probably because those women were Joan Baez and Julia Roberts.

We've got four-and-a-half months to go until the 1989 World Tour winds down. What will Tay do next? Honestly, we have no idea -- and that's the best part.