After receiving Billboard's first-ever Woman of the Decade award, Taylor Swift ushered in a new decade, her 30s, with the most celebrity-filled, festive birthday party we've ever seen.
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Straight after performing at the annual jingle ball, where she was surprised by the entire audience singing her a happy birthday, Taylor hosted a party which was attended by celebrities such as Blake Lively, Ryan Reynolds, Gigi Hadid, Camila Cabello, Halsey, Martha Hunt, Antoni Porowski, Jonathan Van Ness and Jack Antonoff.
Naturally, her friends surprised her with a cat cake, before everyone posed for photos dressed as, well, pretty much Christmas trees. Our fave? The one where Ryan Reynolds is kissing Blake Lively on the cheek. Bless.
Taylor then topped off her very busy weekend by announcing she's headlining Glastonbury next year. 30 looks good on you, Taylor.
Below, all the photos from Taylor Swift's 30th birthday bash.