Sean Penn Shows Off New Lady...and a Buff Bod?!

Actor is spotted sporting quite the physique while walking on the beach in Malibu with his rumored girlfriend

Sean Penn never ceases to amaze us. And, no, we're not talking about his acting here, either.

Rather, it's the very impressive physique the Oscar winner showed off on the Fourth of July while strolling on the beach in Malibu. Not too shabby for a 50-year-old dude.

But it isn't just the buff bod that's got people talking.

There's also the lovely lady by his side, Stacey Koplin, who's rumored to be the actor's new girlfriend. The two not only enjoyed a little Independence Day walk on the sand, but were later spotted hopping on a Jet Ski together as well.

Of course, this hookup comes just one month after Penn and Scarlett Johansson called it quits.

So what do you think? Is Scarlett's loss, Stacey's gain?