Taylor Swift Rehearses for Jingle Ball in Cutest Christmas Sweatshirt

Taylor Swift hit the Forum in Los Angeles last night ahead of her highly anticipated iHeartRadio Jingle Ball Presented by Capital One performance tonight, Friday, December 1. 

In videos posted her Instagram story, the singer wears a HAIM Christmas sweatshirt while giving fans a glimpse inside the Forum where she'll perform. Swift, of course, is pals with HAIM’s Este, Danielle and Alana Haim. The shirt read: “It’s the most wonderful Haim of the year.” 

“[I’m] really excited,” she said in one of the videos, while panning to a bevy of Christmas trees which decorate the venue. 

Taylor joins fellow performers Ed Sheeran, Halsey, Niall Horan, Charlie Puth, Kesha, Liam Payne, Demi Lovato, Sam Smith, Logic and The Chainsmokers for this year's Jingle Ball. 

Stream Taylor's performance and the rest of the iHeartRadio Jingle Ball Presented by Capital One live on CWTV.com and within the CW app beginning at 7:30pm PT/10:30pm ET tonight. The show will also air as an exclusive nationwide 90-minute broadcast television special on The CW Network on Thursday, December 14th, at 8pm ET/PT.