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\n\tSabrina Carpenter<\/a> surprised fans with an appearance from Earth, Wind & Fire during her headlining set at Lollapalooza<\/a> on Sunday night. The singer enlisted the group two of their classic hits, \u201cLet\u2019s Groove\u201d and \u201cSeptember,\u201d joining the band members on vocals and dancing around the stage. <\/p>\n \n\tThe unexpected guest appearance came midway through the \u201cManchild\u201d singer\u2019s set, which also included \u201cPlease Please Please\u201d and \u201cEspresso.\u201d <\/p>\n \n\tElsewhere during the performance, Carpenter fake arrested Twice band members Sana, Jihyo, and Momo. \u201cIf I were to give you these handcuffs\u2026 then I could marry all three of you, right?\u201d Carpenter said as she offered the trio a pair of pink fuzzy handcuffs. <\/p>\n \n\tCarpenter headlined the final night of Lollapalooza, which also featured<\/a> performances by Gracie Abrams, Luke Combs, Tyler, the Creator, Twice, Doechii, Chance the Rapper, and Olivia Rodrigo. The pop star has regularly collaborated with classic artists during her current tour. In July, while playing two back-to-back nights at\u00a0BST Hyde Park\u00a0in London, she brought out<\/a> surprise guest\u00a0Duran Duran to perform their 1982\u00a0Rio\u00a0<\/em>single, \u201cHungry Like the Wolf.\u201d\u00a0<\/p>\n