This Saturday night (March 13), Pearl Jam will take the stage at 30 Rockefeller Center's Studio 8H and rock out on "Saturday Night Live" for the fourth time in their two decades as a band (Jude Law will cover hosting duties). From their humble origins as a band called Mookie Blaylock who formed in the wake of the tragic death of Mother Love Bone frontman Andrew Wood to their world-conquering dominance on albums like Ten and Vs. to their battles with Ticketmaster and George W. Bush to their current incarnation as one of the most consistent and beloved touring acts in the world, Pearl Jam have held onto their core members (save for some shuffling in the drummer's stool) and delivered their rugged mix of classic rock, punk, garage and everything in between.
In 20 years, frontman Eddie Vedder doesn't appear to have aged very much. He still has that youthful glow and a hunger in his eyes, and he has constantly experimented with his look. There was the flannel-fueled early grunge era, the shorter hair of the late '90s, the awesome-looking Mohawk from 2002 and a number of different paramilitary incarnations.
But how has Eddie Vedder really evolved since 1991? Check out the photo gallery below, which features promotional and performance shots from Pearl Jam's entire existence in the spotlight. Watch as Vedder goes from a smooth-skinned singer to a number of different beard variations, and watch out for the special cameo from Neil Young.

(Click here for more photos of Eddie Vedder throughout Pearl Jam's long and storied career!)
Which version of Eddie Vedder do you prefer? Let us know in the comments!