[pic=Jeff Matika]050613_jeff.jpg[/pic][turl=http://www.greendayauthority.com/band/jeff.php]Jeff Matika[/turl], Green Day's touring third guitarist and backup vocalist has joined Instagram. Earlier today, Jeff announced on Twitter that he had made the account for fans to follow.

You can follow Jeff's account by clicking here. So far, he has posted a couple photos from his time off from tour. Hopefully when the band goes back on the road, kicking off their European tour, Jeff will post some pictures from his life on tour.

Billie, Mike, Tré, and Jason are all on Instagram as well, and can be followed at bj_unoxx, mike_dosxx, treleparc, and jw_cuatroxx respectively.

If you would like, you can also follow GDA on Instagram, gdauthority. Lately we've been posting a bunch of pictures from Green Day's North American leg of their 99 Revolutions tour.