AUSTIN, Texas — Sabrina Carpenter stunned fans with another special guest during Weekend 2 of the Austin City Limits Music Festival (ACL) on Saturday night.

During her headlining set on the American Express stage, Carpenter was joined by Texas country band – and former ACL headliners – The Chicks.

It was another surprise for fans, who last weekend were treated to a cameo from a country-pop legend and former ACL headliner , Shania Twain.

“I want to do something really fun and special for you guys, because I love you,” Carpenter told the crowd . “So I thought I’d bring out some friends tonight. I feel so luck to be able to share the stage with them.”

Carpenter and The Chicks then performed the band’s hit song "Wide Open Spaces" together. The Chicks stayed on stage to perform Ca

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