Kiss and Def Leppard rocked Atlantic City Saturday night and jammed out together.

As reported by antimusic.com:

Def Leppard's Phil Collen joined their current coheadlining tour partners KISS on stage at the Boardwalk Hall, Atlantic City this weekend to play Deuce with the US rockers.

The tour also hit Camden, New Jersey last night at the Susquehanna Bank Center, where kissonline.com posted photos of the devoted Kiss army.

Def Leppard and Kiss are in the midst of a 42-date US summer tour which will wrap up on Aug 31 in Texas.

Next stop: Sarasota Springs, New York, tomorrow night.

Not sure what Kiss has on tap after the tour, but Def Leppard will pick up where they left off, working on the follow up to 2008's 'Songs From The Sparkle Lounge'.