Tyler Blackburn & Alexander Ludwig: Imagine Dragons Concert

Tyler Blackburn joins pals JR Bourne and Oliver Trevena for Citi presents Imagine Dragons in Concert held at the Wiltern Theatre on Thursday night (January 23) in Los Angeles.

The 27-year-old Ravenswood actor was also joined by Vikings‘ Alexander Ludwig.

Alexander, 21, recently spoke to Men’s Fitness about gaining 30 lbs for his new film, Lone Survivor.

“A lot of the workout regimen I actually developed myself. I didn’t have enough time between Grown Ups 2 and Lone Survivor to actually work with a trainer. I ate like a caveman�nutrition is so important. I ate lots of meat and vegetables. I did lots of heavy lifting�lower number of lifts and heavy weight. I did supersets of chest and I did this one ab workout I created. It was exhausting and gruesome. I’d work out six days a week. Every day I’d alternate among back, biceps, chest, and triceps, then legs,” he shared.

FYI: Tyler, JR, and Oliver are wearing AllSaints jackets and boots.

10+ pics inside…