IT'S CRIMINAL.

These are the moments that Warped Tour is all about! The surprise on-stage collabs that can only happen when you condense the entire scene on to one lineup.

At Warped Tour Ventura over the weekend, we were treated to one of the best, when All Time Low frontman Alex Gaskarth joined the lads in State Champs on stage to perform 'Criminal' with them.

The magic moment was put on All Time Low's insta story, and captured by a number of justifiably excited fans in the crowd.

it’s always a good day when @AlexAllTimeLow makes a quick appearance at an @State_Champs performance pic.twitter.com/SMAA1Uzyka — mel (@cthmel) June 25, 2018

'Criminal' is the first single off State Champs' new album 'Living Proof', and just so happens to be one of the songs that Alex had a hand in co-writing. So it's a pretty big moment. A pretty big moment indeed.