Taylor Swift's squad is getting bigger every day and we're starting to feel left out. Where's our invite, Tay? The superstar's latest new friend is none other than Andreja Pejic, a transgender model from Australia. Pejic joined Swift on stage, along with fellow model Lily Donaldson at her Chicago concert over the weekend.

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We've been into Pejic for a while now (Click here to read our exclusive interview with her) and are loving the new BFF treatment she's getting from Swift. "Tonight @andrejapejic and @lilydonaldson SHUT DOWN the runway. Crowd went insane!" Swift tweeted after the concert. 

It seems like every concert, Swift has a special surprise for her fans. We can't wait to see who she brings on stage next.

Follow Emily on Twitter: @EmLaurence