Watch Iggy Azalea, 5 Seconds Of Summer And OneRepublic Perform At Kiss 108 FM's Jingle Ball 2014

So many Jingle Balls, so little time. The annual iHeartRadio holiday concert continues its tour around the country, with the most recent stop at Kiss 108 in Boston, MA last night. The biggest show happened on Friday night in NYC, with headliners like Ariana Grande, Nick Jonas and Taylor Swift. But the lineup in Boston was also impressive, so much so that it almost detracted attention away from the star-studded Justin Timberlake concert happening elsewhere in the Northeast, where Taylor Swift and Beyonce danced together in the audience. Yes, that happened.

PHOTOS: Why Ariana Grande "Almost Died" at Jingle Ball in NYC

Watch the video above to see Iggy Azalea, 5 Seconds of Summer and OneRepublic perform at Kiss 108's Jingle Ball.

WATCH: Taylor Swift Dances With Beyonce as Justin Timberlake Performs with Jay Z

Whose performance was your favorite? Tweet us @OKMagazine.