Swift wasn’t dancing alone -- the giddy gal spent her night with pals, including Ruby Rose.
The Orange Is the New Black star shared a video of herself and Swift, who were both sporting Happy New Year tiaras. “When @taylorswift looks perfect in a feather tiara and I look wrong.. But HAPPY 2016!!!!!!!” Rose wrote on Instagram.
In a second video, Rose and a friend can be seen singing along to Harris’ song, “Sweet Nothings,” with Swift popping into the frame towards the end.
“Highlight of 2016 .. So far..” the 29-year-old Australian actress wrote on the post.
The “Out of The Woods” singer also took to Instagram, sharing a photo of herself and actress Cristina Squyres donning masquerade masks with the caption, “Oh hi, 2016!”
Even though Harris was the one performing, it was Swift’s famous dance moves that took center stage. One fan even tweeted photos of the proud girlfriend shaking it off.
Swift seems to be enjoying time off following her seven month 1989 World Tour. On Dec. 23, she and Harris got into the Christmas spirit by building a large snowman alongside her brother, Austin, during a trip to Colorado.