On Friday, Z100's Jingle Ball brought Top 40 love to Madison Square Garden. John Mayer, Taylor Swift, Boys Like Girls with Leighton Meester and Jay Sean performed for a tween heavy, screaming audience.

[All photos by Carrie Shaltz for PMc]. On hand were celeb parents including Kelly Bensimon and Peter "The Fac" Facinelli, looking less the vampire and more the family man, although wife Kelly Taylor Jennie Garth was not on his arm.

The highlight of the concert, presented by H&M, was the frequent overlapping of performers, allowing unexpected and exciting pairings like Swift and Mayer. Very much in the spirit of the holidays, it was like one big, happy family.

Leighton Meester

John Mayer

Taylor Swift, Jay Sean

Kelly Bensimon, Nicole Fiscella

The Fac, a girl with a porn star name we must assume is Miss Teen USA (Stormi Henley)

John Mayer

Jay Sean

Jordin Sparks

Boys Like Girls