Taylor Swift rocks with music legend Mick Jagger in Nashville

Taylor Swift's squad just keeps getting bigger and bigger.

Leaving no celeb behind, the "Blank Space" singer invited Rolling Stones frontman Mick Jagger to join her on stage Saturday night during the second show of her 1989 World Tour at Nashville's Bridgestone Arena.

The pair jammed to "I Can't Get No Satisfaction" while a firework background lit up the stage, a moment she later aptly described by simply tweeting, "drops mic."

This isn't the first time the two stars joined forces on stage. Swift accompanied the Rolling Stones while they were performing in Chicago in June 2013, where she sang alongside Mick to the band's song, "As Tears Go By."

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Never leaving fans disappointed (or letting a show go by with only one guest drop-in), the 25-year-old pop star performed another surprise duet with Leona Lewis, which left even Taylor completely fangirling.

"Me losing my mind because @leonalewis is singing 'Bleeding Love' and it's the most glorious, beautiful thing I've ever heard or seen," Swift gushed on Instagram.

She also shared a video of the two singing, and at the end of the clip, she can clearly be seen unable to contain how happy she is to hear Lewis belt out the hit song.

https://instagram.com/p/8IGx0tDvK_/

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Those pipes!

Swift wasn't the only one impressed. Lewis took to Twitter to send some love right back to her duet partner.

"Had the most incredible night performing with one of the loveliest most genuine artists I know @taylorswift13. You set the stage alight @taylorswift13! So blessed to be part of such a special night," the British singer wrote over two tweets.

Is there anyone Swift doesn't know? Her first night in Nashville was just as star-studded, with Steven Tyler, Alison Krauss and Kelsea Ballerini hitting the 1989 tour stage on Friday.

LOOK: Taylor Swift's loyal entourage:

There is one person, however, who isn't interested in joining the mega squad. Find out why Rihanna has no interest in hitting the stage with Swift in the video below.