Hanson is celebrating their 20th year anniversary!

On January 7th, Hanson tweeted a BTS photo of themselves and some of Hollywood and music’s best at their music video filming set.

Below was the message that accompanied their photo on Facebook:

“HANSON and Friends 2013 – Video Shoot – Los Angeles CA

A late night snapshot of our incredible ensemble cast for the coming HANSON music video. @officialkat @nikkireed_i_am @drewseeley @alexbeh @amypaffrath @thepaulmcdonald @adamneustadter”

Celebs Kat Dennings, Drew Seeley, Alex Beh, Amy Paffrath, American Idol finalist Paul Mcdonald and his wife Nikki Reed, and Adam Neustadter are all featured in the image.

I was a huge fan of Hanson growing up, but I had no idea they were this big behind the scenes!

All rights to the image and quote belongs to Hanson and 3CG Records.