It appears as though Amazon billionaire Jeff Bezos has been hitting the gym HARD, having popped up with his girlfriend on a mega yacht in St Barts recently looking like this…

Apparently, he’s doing it all clean, too. Here’s what TMZ had to say about accusations that Bezos was taking growth hormone HGH to bulk up:

The 57-year-old Amazon titan has been working out like crazy with celeb trainer Wes Okerson. We’re told he was on a strict diet and exercise regimen for months.

That said, lots of folks on social media are pooh-poohing Bezos’ transformation, chalking it up to HGH.

A source with direct knowledge scoffs at the allegation, telling us the HGH claim is 100% false.

The source insists this is all Jeff and no drugs or other artificial enhancements. A recent report from Page Six says Bezos’ trainer is Wesley Okerson, who also apparently was in St. Barts at the same time as Jeff … so you gotta imagine he’s keeping him pumped up.

Fair play to personal trainer Wesley Okerson – the guy is clearly worth every penny. I don’t find it hard to believe that he’s not on HGH, given he’s rich enough to do it all properly. All you need is an elite personal trainer to keep you in check and it looks like Bezos has that covered.

Then again, look at those traps…

The multi billionaire clearly had a great time out there ringing in the new year with girlfriend Lauren Sanchez. Get a load of those Heartbreak Kid glasses! And the Pitbull-style shirt!

Not bad for a guy who used to look like this…

Who says you can’t get hotter with age, eh?

For the time Jeff Bezos’s girlfriend flirted with Leo DiCaprio right in his face, click HERE. Wonder if that was the moment that inspired him to get into shape?