Taylor borrowed her costume from Blake Lively's husband Ryan Reynolds.
Photo: Instagram/@taylorswift
2/5
Taylor dressed as Deadpool and Gigi went as a Cub Scout.
Photo: Instagram/@taylorswift
3/5
Taylor celebrated Fourth of July with some of the biggest names in Hollywood.
Photo: Instagram/@taylorswift
4/5
Gigi shared details from Taylor's Halloween party.
Photo: Instagram/@taylorswift
5/5
Taylor threw a star-studded Fourth of July party with friends including, Gigi Hadid, Blake Lively, Karlie Kloss, Cara Delevingne, Ruby Rose and more.
Photo: Instagram/@taylorswift