78violet band-sisters Aly and AJ Michalka snap a pic backstage with Cheap Trick‘s Robin Zander and Rick Nielson on Sunday night (September 6) in Los Angeles.

The blonde bombshells also met up with Rick Allen of Def Leppard at the show. The duo tweeted about their meet and greets, saying, “[Rick Allen] wow wow wow, amazing drummer! [Robin Zander and Rick Neilson] bad ass guys! So talented.”

Aly and AJ also just returned from a short weekend trip from Lake Como, Italy. They tweeted, “Lake Como, Italy was outrageous! Had the time of our lives with @TheRealDevinB Way too short of a trip.”