Credit: Getty Images; PacificCoastNews (2)

Altering one's appearance for the sake of art is pretty standard in Hollywood: Just take Jake Gyllenhaal’s 30-lb weight loss for his role as crime-hunter photojournalist in Nightcrawler, or Renee Zellweger’s weight gain as chardonnay-loving Bridget Jones in the film’s three installments into consideration. While hair makeovers are decidedly less dramatic in comparison, George Clooney and Channing Tatum’s looks for the Coen Brothers’ newest comedy, Hail, Caesar! (currently set for a February 2016 release) are nonetheless shocking for men who don’t stray far from their signature looks.

Tatum, who’s partial to the dark, close-cropped look, was snapped on the set of the film with dapper blonde waves worthy of a Disney prince, whereas Clooney has returned to a Caesar-esque cut (baby bangs and all) reminiscent of his days as Dr. Doug Ross on ER. The actors aren’t the only celebs to have currently undergone a hair makeover—Justin Bieber alerted fans to his newly bleached 'do via Twitter, shamelessly promoting the new style with a shirtless selfie and hashtag, “Left something for you on my @OfficialFahlo #blondebieber :)” Here's a tip, boys. Avoid the dull, fried effects of bleach by applying Christophe Robin's Shade Variation Care in Baby Blonde ($55, weekly.