Sabrina Carpenter joins Taylor Swift in New Orleans on her one night off

Taylor Swift’s Saturday night show in New Orleans came with surprises. In an orange dress, the singer told the crowd she changed the rules of her surprise set. She was going to sing a song not in her discography, but in her friend Sabrina Carpenter’s music catalog.”I think tonight I’m going to do something completely different, which is that I’m going to sing a song that’s not mine, but it’s somebody that I really love,” the singer said to the 65,000 people in attendance before strumming “Espresso” by Carpenter. She finished after a couple of lines and paused.”So you really love that song as much as I do?” Swift asked, smiling. “I know I’m just going on a tangent because I love my friend and I’m just so proud of Sabrina and the year she’s had.”The Eras Tour crowd erupted in the Caesars Superdome as Swift grabbed her phone from a stage hand and put Carpenter on speaker.”I’m really somewhere really loud, I’m in New Orleans on the Eras Tour,” Swift said into the phone. “I just wanted…