What does Sir Ian McKellen wear beneath his wizard's robes—or his gold shorts? During a performance this week, he revealed his tighty-Gandalf-the-whities.

McKellen bared his Gandalf underwear—featuring the words "You Shall Not Pass"—during a performance at Only Make Believe's 14th Annual Gala, "Make Believe On Broadway." He decided to enact a quick costume change onstage, presumably to show off his choice of brief. You can see a few images of McKellen's underpants in the video above, or see step-by-step photos of the costume change at Broadway World.

[via Nerd Approved]