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Taylor Swift Concert Instagram

Christopher Polk/Getty Images for TAS

No female BFFs took the stage this time, but Taylor Swift's squad did gain more star power on Friday night at the first Los Angeles concert of her 1989 tour.

The "Blank Space" singer brought onstage OneRepublic's Ryan Tedder and Lakers star Kobe Bryant. She and the fellow singer-songwriter performed his band's 2013 pop hit "Counting Stars."

It was so awesome to collaborate with him on 'Welcome to New York' and 'I Know Places,' then share the stage with him," Swift wrote on Instagram, alongside a photo of the two.

Taylor Swift Concert Instagram

Instagram

Surprise guest @onerepublic front man #RyanTedder joined @taylorswift on the @staplescenterla stage #1989TourLA

A video posted by STAPLES Center (@staplescenterla) on

Bryant, whose team's home base is Staples Center, appeared onstage as Swift performed her runway-themed hit "Style."

"The screams you hear from an LA crowd when Kobe walks out onstage are so deafening you think you may have permanent hearing loss," Swift said on Instagram. "But it was SO WORTH IT."

Taylor Swift Concert Instagram

Instagram

He also arrived bearing a gift: Bryant presented Swift with a banner that reads, "Taylor Swift, Most Sold Out Performances" for her record-setting 16 sold-out shows, the largest number for any artist at Staples Center.

We like the #16 here in Los Angeles #1989TourLA @kobebryant @taylorswift

A video posted by STAPLES Center (@staplescenterla) on

The concert marked the first of five consecutive shows in Los Angeles. Swift has been bringing out many celebrity performers and other guests during her 1989 tour, most recently the female pop groups Fifth Harmony and Little Mix.

Law & Order: SVU star Mariska Hargitay, whose character inspired the name of one of Swift's cats and who appeared in the singer's "Bad Blood" video, was spotted in the crowd, E! News has learned. Hargitay had met Swift and appeared onstage with her at her concert in Philadelphia in June. Many "Bad Blood" stars are close friends of the singer and have also made appearances at her shows.

Other celebs who attended Friday's Staples Center concert included video co-star Gigi Hadid and boyfriend (and Swift's ex) Joe Jonas,Helen HuntReal Housewives of Orange County star Lizzie RovzekJesse Tyler Ferguson and Mark Wahlberg.

Me and #Taylorswift #1989tourLA

A photo posted by Helen (@thehelenhunt) on

The actor brought his 11-year-old daughter Ella Wahlberg and her friends to meet the singer backstage, while Ferguson hung out with her as well.

Mission accomplished-- happy early birthday Ella!!! Thanks so much @taylorswift

A photo posted by Mark Wahlberg (@markwahlberg) on

—Additional reporting by Mike Vulpo