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Taylor Swift Concert, Matt LeBlanc, Chris Rock, Sean O'Pry

Christopher Polk/Getty Images for TAS

How you doin'?!

Matt LeBlanc and Chris Rock took the stage together at Taylor Swift's second 1989 tour concert in Los Angeles' Staples Center on Saturday, becoming the latest celebrity surprise guests to walk her runway as she performed "Style." The three were joined by Sean O'Pry, a model who appeared in Swift's "Blank Space" video, and even scored a hug from the singer.

"The #1 male model in the world, Sean O'Pry," Swift wrote on Instagram. "And the #2 and #3 top male models, Chris Rock and Matt LeBlanc. Obviously."

Matt LeBlanc and @chrisrock on the #taylorswift catwalk...

A video posted by maria menounos (@mariamenounos) on

The singer has been bringing famous BFFs and other stars onstage regularly since beginning her concert series in May, effectively growing her "squad." At Saturday's concert, she also performed with Mary J. Blige and Uzo Aduba, who plays Crazy Eyes on Orange Is the New Black.

She an Blige sang the latter singer's songs "Doubt" and "Family Affair."

Special guest @therealmaryjblige killed it with @taylorswift!!!!! #1989TourLA

A video posted by STAPLES Center (@staplescenterla) on

Swift and Aduba performed "White Horse."

"I'm so blown away by the multi-talented Uzo Aduba and how she smashed 'White Horse' tonight," Swift said on Instagram. "And also by how incredibly down to earth and wonderfully kind she is."

Amazing duet of "Whitehorse" by @taylorswift and special guest @uzoaduba #1989TourLA #taylorswift

A video posted by STAPLES Center (@staplescenterla) on

This marked the second out of five shows at Staples Center for Swift's 1989 tour. Like the first concert on Friday, there were a slew of celebrity attendees, many of whom appeared a private event hosted by Tommy Bahama, held at the Hyde Lounge inside the venue.

The list of celebrity attendees also included:

8 Simple RulesAmy Davidson and Mean GirlsLacey Charbet, who wrote on Instagram, "@TaylorSwift put on the most spectacular show!! The energy at Staples Center was unreal. @MaryJBlige surprise performance was incredible!! #TS1989 #TBxTSwift."

 Amy Davidson, Lacey Chabert, Taylor Swift Concert, Instagram

Instagram

Nina Dobrev, who hung out with E! News' Maria Menounos.

Taylor Swift Concert, Nina Dobrev

Jason Merritt/Getty Images

Great night with these ladies @valeriefatehi @ninadobrev and of course....@taylorswift !

A photo posted by maria menounos (@mariamenounos) on

Pretty Little Liars' Ashley Benson, who arrived with her mother and sister:

Girls night at Staples!! Taylor Swift ?? #staples #taylorswift #fun #dancing #music

A photo posted by Shannon Benson (@shannbenson) on

Pretty Little Liars' Janel Parrish:

????????

A photo posted by Janel Parrish (@janelparrish) on

t Swizzle sing to me

A video posted by Janel Parrish (@janelparrish) on

Greek alum Amber Stevens West and Smash alum and Scorpion actress Katharine McPhee:

Taylor Swift Concert, Amber Stevens West, Katharine McPhee

Jason Merritt/Getty Images

Swift returns to Staples Center for a third concert on Monday.