Justin Bieber is hoping to ensure that he's got the best costume this Halloween, and per his Populagram page, it seems the Biebs is either trying 'Iron Man' on for size this year or he's hoping to lock in a really big ticket role for his movie debut.

The 'Baby' singer said in an interview recently that "his people" are hard at work on a movie script -- and these photos of Bieber in half 'Iron Man' gear do appear to be set up for some sort of photo shoot. Still, knowing the 17-year-old superstar, we bet he'd be hard-pressed to keep his mouth shut if he had snagged some huge blockbuster remake. Our best guess? This iron-clad attire is for Oct. 31.

After all, Halloween is pretty much the ideal holiday for a kid whose puppy dog eyes and pearly whites are easily recognizable by, like, every person everywhere. The Biebs and his lady friend Selena G. could toss on a disguise and hit the streets to bag up some candy, and no one would be the wiser. We think that would be a perfect way to celebrate on the eve of a new album release -- Bieber will drop 'Under the Mistletoe' the next day, Nov. 1.

When these metal Bieber pics popped up, so did another tough shot of the 'One Less Lonely Girl' singer and his good friend Sean Kingston with America's karate chop king, Chuck Norris -- or at least some dude that looks exactly like the 'Walker, Texas Ranger' star. Seems like Biebs has a thing for guys with arms of steel.