Your Shirtless Celebrity Roundup is Forever Young and Fresh

No secret that there's something in the Hollywood air that makes celebrities ageless - and we don't mean botox, lipo and microdermabrasion. From late-40s Rob Lowe to mid-20s Mark Salling, here's proof the L.A. Aquaduct is the fountain of youth.

As the cover boy of May's Vanity Fair, Rob Lowe wins as hot oldster of the week. Even if he's surely photoshopped to death and trying to get away with the ol' "Cross-Arms-and-Use-Hands-to-Bulk-up-Biceps" trick, the 47 year old is unquestionably as hot as 25 years ago. If only he were the type of daddy who hit on us in the clubs. Let's compare with young Rob...

Here's Rob at the age of 22 in 1986's Youngblood, looking equally as scrumptious then as now. Surely he must have his own Dorian Grey portrait hidden in the attic—he's aged all of 5 years! Is he as lovely from behind?

Yes! (Also from Youngblood.)

43-year-old Guy Pearce wowed with his ageless physique in this weekend's premiere of HBO's "Mildred Pearce." Another frequent drinker of the Fountain of Youth, he hasn't gained a pound or a wrinkle since Priscilla. Yes, we really will have what he's having.

Jake Gyllenhaal has bulked up and grown more chest hair in the decade since Bubble Boy. These just-released photos of him on set have sent the forums a-frenzy as proof of Jake's homo urges. It's all the proof our delusional, gullible minds need.

Looking sexier every year, Justin Timberlake seems manlier, yet still eternally boyish. He's looking sculpted from marble in this still his upcoming film Friends With Benefits, Hollywood's quickest example of remaking a previous title—in this case 2010's No Strings Attached

Bear Grylls doesn't fit into theme, but this nature-obsessed hunk is always a welcome shirtless sight. We'd be so willing to age with a modern day hunter-gatherer. We know we'd survive any disaster with this ultimate mountain man.

Our young buck is Glee's Mark Salling, who can Puck us any time. He tweeted his catch while in Texas. Hot and depressing, because it appears he really does prefer fish.

Presenting Australian rugby player Nick Youngquest. No, he doesn't fit into our theme, but who could pass up another chance to ogle this tight muscle god? He's this week's "Just Because."