Reynolds' wife and friend of Swift, Blake Lively, 29, loved the popstar's costume so much that she jokingly commented "#HusbandUpgrade" on Swift's photo.
The Bad Blood singer spent her Halloween in New York City with not only Gigi Hadid, but Victoria's Secret models Martha Hunt and Lily Donaldson, Fifth Harmony singer Camila Cabello, actress Kennedy Rayee and Emmie Gundlerm.
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