She rocked out on stage with actor Jesse Tyler Ferguson, who was there helping host a Pride Month celebration.
The singer has recently voiced her support for LGBTQ rights.
"It's an absolute honor to be here at the Stonewall Inn. Thank you for being so wonderful. So fun dancing with you. Happy Pride Month," Swift told the crowd.
The Stonewall Inn is marking the 50th anniversary of the riots credited with launching the LGBTQ rights movement.
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