Happy dir-tay thir-tay, Taylor Swift!
The pop star celebrated her 30th birthday on Friday onstage at Z100's 2019 Jingle Ball at Madison Square Garden and at a private after-party with her boyfriend, Joe Alwyn, and her celebrity squad at the Oscar Wilde restaurant in New York City.
The group included Blake Lively and husband Ryan Reynolds, models Gigi Hadid and Martha Hunt, Queer Eye stars Antoni Porowski and Jonathan Van Ness, Jack Antonoff, As Seen on TV founder Kevin Harrington and fellow singers and Jingle Ball performers 5 Seconds of Summer, Halsey and Camilla Cabello.
Wearing festive red and green nail polish and her signature red lipstick, Swift arrived at the party with her BFF Abigail Anderson Lucier, and a slew of security guards. Most of the attendees were dressed in festive holiday attire.
"They passed around red Santa hats that said 30 'Thir-Tay' on the front," an eyewitness told E! News. "Everyone wore the hats and danced up a storm. There was fun music playing and everyone was singing along and having a blast. They had drinks and there was lots of toasting and hugging going on. Everyone was so happy to celebrate Taylor."
Swift received a birthday cake adorned with roses and cats—an homage to her pets and her role in the upcoming Cats musical film.
"Fur real guys this was my cake," she wrote on Instagram.
The group danced to some killer tunes curated by the birthday girl, which included rocker Meredith Brooks' 1997 hit "Bitch."
"Honestly spending my 30th with the fans who have made my life what it is at Jingle Ball, then throwing the most aggressive holiday party known to womankind..." Swift wrote on Instagram. "I just.. seriously feel so lucky for you all and will spend forever trying to find ways to say thank you. *cries in Christmas tree*"