Okay, we are officially jealous!
Pictures posted online by Taylor's brother Austin Swift show the incredibly A-list group of friends having fun in a photobooth at an after-party for the event in Las Vegas.
A string of pictures show the celebrity friends playing with props including a bear mask, a fake pirate's sword and a crown. Clearly they were having fun!
Missing from the photos were two One Direction stars, however: Liam Payne and Harry Styles. Harry, of course, being Taylor's ex-boyfriend…
But it wasn't a case of them avoiding each other as a rep for 1D said today Harry simply left Las Vegas after the awards so wasn't around for any of the parties.
Taylor's brother Austin also used the collage of pictures to mark his foray into Instagram, amassing an incredible 10,000 followers immediately!
He joined his famous sister and her Scottish DJ boyfriend Calvin at the MGM Grand on Sunday evening, where Taylor was the night's biggest winner taking home prizes including 'Top Female Artist', 'Top Artist' and 'Top Billboard 200 Album'.
She also premiered her amazing, star-studded new music video for 'Bad Blood' featuring even more of her famous friends including Ellie Goulding, Cara Delevingne, Lena Dunham and Karlie Kloss.
Oh, Taylor, can we please swap lives for just a day?!
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